A Systematic Literature Study of the Sinus Septi Nasi, Crista Galli and Other Minor Pneumatizations / Estudio Bibliográfico Sistemático del Seno Septi Nasi, Crista Galli y Otras Neumatizaciones Menores

SUMMARY: Variations in the paranasal sinuses and pneumatizations originating from these structures are clinically important for surgical procedures to be performed in the nose and nasal cavity regions. No systematic review examining the sinus septi nasi, crista galli and other minor pneumatizations was found in the literature review. This study aimed to review the papers in the literature including the sinus septi nasi, crista galli and other minor pneumatizations and standardize the mean incidence, distribution by sex, age and origin of these structures. Furthermore, it was aimed to examine the height, length, and width values of sinus septi nasi and crista galli pneumatizations, determine the measurement intervals and measurement values, and standardize them. The studies involving these pneumatizations were reviewed from various databases. After being evaluated according to the inclusion and exclusion criteria, 35 articles between the years 1991-2021 were reviewed. Based on the data obtained from these articles, we examined the incidence of sinus septi nasi, crista galli, and other minor pneumatizations. Middle nasal turbinate pneumatization had the highest incidence among all these pneumatizations. Uncinate process pneumatization had the lowest incidence. Considering the distribution by sex, no difference was found. Upon examining the age range, there were people aged between 1-95 years, and the mean age range was 33.05-41.48. The length, width and height values of crista galli and sinus septi nasi could not be standardized due to the insufficient number of studies and variable data in the literature. We believe that our study will contribute to similar future studies in larger populations with the clinical procedures to be performed in and around the nasal cavity.

Las variaciones en los senos paranasales y las neumatizaciones que se originan en estas estructuras son clínicamente importantes para los procedimientos quirúrgicos que se realizan en las regiones de la nariz y la cavidad nasal. En la revisión de la literatura no se encontró ninguna revisión sistemática que examinara el seno septi nasi, la crista galli y otras neumatizaciones menores. Este estudio tuvo como objetivo revisar los trabajos en la literatura que incluyen el seno septi nasi, la crista galli y otras neumatizaciones menores y estandarizar la incidencia media, la distribución por sexo, edad y origen de estas estructuras. Además, tuvo como objetivo examinar los valores de altura, longitud y ancho de las neumatizaciones del seno septi nasi y crista galli, determinar los intervalos de medición y los valores de medición, y estandarizarlos. Los estudios relacionados con estas neumatizaciones se revisaron a partir de varias bases de datos. Luego de ser evaluados según los criterios de inclusión y exclusión, se revisaron 35 artículos entre los años 1991-2021. Sobre la base de los datos obtenidos de estos artículos, examinamos la incidencia de septi nasi nasi, crista galli y otras neumatizaciones menores. La neumatización de la concha nasal media tuvo la mayor incidencia entre todas estas neumatizaciones. La neumatización del proceso uncinado tuvo la menor incidencia. Considerando la distribución por sexo, no se encontró diferencia. Al examinar el rango de edad, había personas con edades entre 1 y 95 años, y el rango de edad promedio fue de 33,05 a 41,48. Los valores de longitud, ancho y altura de crista galli y seno septi nasi no pudieron estandarizarse debido a la cantidad insuficiente de estudios y datos variables en la literatura. Creemos que nuestro estudio contribuirá a futuras investigaciones similares en poblaciones más grandes con los procedimientos clínicos que se realizarán en y alrededor de la cavidad nasal.

Asociación entre las variantes anatómicas del complejo osteomeatal y patología inflamatoria sinusal: estudio de casos y controles / Association between anatomical variants of the osteomeatal complex and inflammatory sinus pathology: case-control study

Introducción: las variantes anatómicas nasosinusales pueden ser una causa frecuente de infecciones crónicas, y resulta importante identificarlas en la práctica diaria. Objetivo: determinar la asociación entre las variantes anatómicas del complejo osteomeatal (COM) y el desarrollo de patologías inflamatorias nasosinusales. Materiales y métodos: estudio de casos y controles, muestra de 226 pacientes identificando las variantes anatómicas del COM en la tomografía computada (TAC) de senos paranasales (SPN) y su correlación clínica. Resultados: el 51,9 % presentaron hallazgos imagenológicos indicativos de patología inflamatoria nasosinusal y el 19,8 % reportaron sintomatología sugestiva de sinusitis en la historia clínica. Los SPN más afectados fueron: maxilares (46,9 %) y etmoidales (23 %). Las variantes anatómicas más frecuentes fueron las celdillas de Agger Nasi (50,2 %) y la desviación septal (46,2 %). Se encontró como variable estadísticamente significativa la inserción lateral de la apófisis unciforme (p = 0,015) más frecuente del lado izquierdo (p = 0.018, odds ratio [OR] = 4,078, intervalo de confianza [IC] 95 % = 1,3-12,6). Discusión: Se confirmó la incidencia de las variantes anatómicas más frecuentes en la literatura, sin embargo, no se correlacionan con los hallazgos clínicos para la serie de pacientes estudiada en comparación con otros estudios. Existe una alta relación entre la inserción lateral de apófisis unciforme y hallazgos de rinosinusitis escasamente documentados en la literatura médica. Conclusión: se requieren más estudios sobre modelos predictivos en muestras poblacionales mayores y protocolos de lectura TAC enfocados sobre diferentes variantes anatómicas de la apófisis unciforme.

Introduction: Sinonasal anatomical variants can be a frequent cause of chronic in- fections, so it is important to identify them in daily practice. Objective: To determine the association between the anatomical variants of the osteomeatal complex (OCM) and the development of sinonasal inflammatory pathologies. Materials and methods: Case-control study, a sample of 226 patients is analyzed identifying the anatomical variants of OCM in computed tomography of the paranasal sinuses and their clinical correlation. Results: 51.9% presented imaging findings indicative of sinonasal in- flammatory disease, 19.8% reported symptoms suggestive of sinusitis in the clinical history. The most affected paranasal sinuses were: maxillary (46.9%) and ethmoid (23%). The most frequent anatomical variants were Agger Nasi cells (50.2%) and septal deviation (46.2%). The lateral insertion of the uncinate process (p=0.015) was a statistically significant variable, more frequent on the left side (p=0.018, odds ratio [OR]=4.078, 95% confidence interval [CI]=1.3-12.6). Discussion: The incidence of the most frequent anatomical variants in the literature was confirmed, however not correlated with the clinical findings for the series of patients studied in comparison with other studies. There is a high relationship between the lateral insertion of the uncinate process and rhinosinusitis findings that are scarcely documented in the medical literature. Conclusion: More studies are required on predictive models in larger population samples and tomographic reading protocols focused on different anatomical variants of the uncinate process

Hamartoma fibrovascular facial grave en paciente con esclerosis tuberosa (ET). Resolución de caso problema. Nuestra experiencia / Severe facial fibrovascular hamartoma in a patient with tuberous sclerosis (TS). Problem case resolution. Our experience

La ET es un trastorno multisistémico autosómico dominante que se caracteriza por displasia celular y tisular en varios órganos (cerebro, corazón, piel, ojos, riñones, pulmones) que constituyen una fuente importante de morbilidad y mortalidad. Las manifestaciones comunes incluyen tubérculos corticales, nódulos subependimarios, astrocitomas subependimarios de células gigantes, convulsiones, rabdomiomas cardíacos, AML renales, hamartomas retinianos, linfangioleiomiomatosis pulmonar, angiofibromas faciales, manchas de hojas de ceniza, parches de Shagreen, discapacidad intelectual y trastorno del espectro autista. Se presenta a continuación la resolución de un caso problema grave de una paciente que llega a la consulta al hospital público, con severa incapacidad para mantener la permeabilidad de la válvula nasal externa, a expensas de formación harmartomatosa grave, de años de evolución, fétida y sangrante, decidiéndose tomar conducta quirúrgica urgente y agresiva dada las condiciones de la lesión, la poca colaboración de la paciente y el contexto familiar de la misma que presenta además trastornos conductuales asociados a manifestaciones neurológicas de la enfermedad (retraso madurativo)

ET is an autosomal dominant multisystem disorder characterized by cellular and tissue dysplasia in several organs (brain, heart, skin, eyes, kidneys, lungs) that constitute a major source of morbidity and mortality. Common manifestations include cortical tubercles, subependymal nodules, subependymal giant cell astrocytomas, seizures, cardiac rhabdomyomas, renal AML, retinal hamartomas, pulmonary lymphangioleiomyomatosis, facial angiofibromas, ash leaf spots, shagreen patches, intellectual disability, and autism spectrum disorder. This paper presents the resolution of a serious problem case of a patient who attends the consultation of a public hospital, with severe inability to maintain the patency of the external nasal valve, at the expense of severe harmartomatous formation, of many years of evolution, fetid and bleeding, deciding to undertake urgent and aggressive surgical conduct given the conditions of the lesion, the lack of collaboration of the patient and the family context of the same, which also presents behavioral disorders associated with neurological manifestations of the disease (maturational delay).

Neoadjuvant chemotherapy in the treatment of locally advanced olfactory neuroblastoma in 25 cases / 中华耳鼻咽喉头颈外科杂志

Objective: To evaluate the efficacy of neoadjuvant chemotherapy (NACT) in the treatment of locally advanced olfactory neuroblastoma (ONB), and to explore the factors related to the efficacy of NACT. Methods: A total of 25 patients with ONB who underwent NACT in Beijing TongRen Hospital from April 2017 to July 2022 were retrospectively analyzed. There were 16 males and 9 females, with an average age of 44.9 years (ranged 26-72 years). There were 22 cases of Kadish stage C and 3 cases of stage D. After multiple disciplinary team(MDT) discussion, all patients were treated sequentially with NACT-surgery-radiotherapy. Among them, 17 cases were treated with taxol, cis-platinum and etoposide (TEP), 4 cases with taxol, nedaplatin and ifosfamide (TPI), 3 cases with TP, while 1 case with EP. SPSS 25.0 software was used for statistical analysis, and survival analyses were calculated based on the Kaplan-Meier method. Results: The overall response rate of NACT was 32% (8/25). Subsequently, 21 patients underwent extended endoscopic surgery and 4 patients underwent combined cranial-nasal approach. Three patients with stage D disease underwent cervical lymph node dissection. All patients received postoperative radiotherapy. The mean follow-up time was 44.2 months (ranged 6-67 months). The 5-year overall survival rate was 100.0%, and the 5-year disease-free survival rates was 94.4%. Before NACT, Ki-67 index was 60% (50%, 90%), while Ki-67 index was 20% (3%, 30%) after chemotherapy [M (Q1, Q3)]. The change of Ki-67 before and after NACT was statistically significant (Z=-24.24, P<0.05). The effects of age, gender, history of surgery, Hyams grade, Ki-67 index and chemotherapy regimen to NACT were analyzed. Ki-67 index≥25% and high Hyams grade were related to the efficacy of NACT (all P<0.05). Conclusions: NACT could reduce Ki-67 index in ONBs. High Ki-67 index and Hyams grade are clinical indicators sensitive to the efficacy of NACT. NACT-surgery-radiotherapy is effective for patients with locally advanced ONB.

Impact of sinonasal anatomic changes after endoscopic anterior skull base surgery on nasal airflow and air conditioning: a computational fluid dynamics study / 中华耳鼻咽喉头颈外科杂志

Objective: To analyze the impact of the sinonasal anatomic changes after endonasal endoscopic anterior skull base surgery on the nasal airflow and heating and humidification by computational fluid dynamics (CFD), and to explore the correlation between the postoperative CFD parameters and the subjective symptoms of the patients. Methods: The clinical data in the Rhinology Department of the First Affiliated Hospital of Zhengzhou University from 2016 to 2021 were retrospectively analyzed. The patients received the endoscopic resection of the anterior skull base tumor were selected as the case group, and the adults whose CT scans had no sinonasal abnormalities were chosen as the control group. The CFD simulation was performed on the sinonasal models after reconstructed from the patients' sinus CT images during the post-surgical follow-up. All the patients were asked to complete the Empty Nose Syndrome 6-Item Questionnaire (ENS6Q) to assess the subjective symptoms. The comparison between two independent groups and the correlation analysis were carried out by using the Mann-Whitney U test and the Spearman correlation test in the SPSS 26.0 software. Results: Nineteen patients (including 8 males and 11 females, from 22 to 67 years old) in the case group and 2 patients (a male of 38 years old and a female of 45 years old) in the control group were enrolled in this study. After the anterior skull base surgery, the high-speed airflow moved to the upper part of the nasal cavity, and the lowest temperature shifted upwards on the choana. Comparing with the control group, the ratio of nasal mucosal surface area to nasal ventilation volume in the case group decreased [0.41 (0.40, 0.41) mm-1 vs 0.32 (0.30, 0.38) mm-1; Z=-2.04, P=0.041], the air flow in the upper and middle part of the nasal cavity increased [61.14 (59.78, 62.51)% vs 78.07 (76.22, 94.43)%; Z=-2.28, P=0.023], the nasal resistance decreased [0.024 (0.022, 0.026) Pa·s/ml vs 0.016 (0.009, 0.018) Pa·s/ml; Z=-2.29, P=0.022], the lowest temperature in the middle of the nasal cavity decreased [28.29 (27.23, 29.35)℃ vs 25.06 (24.07, 25.50)℃; Z=-2.28, P=0.023], the nasal heating efficiency decreased [98.74 (97.95, 99.52)% vs 82.16 (80.24, 86.91)%; Z=-2.28, P=0.023], the lowest relative humidity decreased [(79.62 (76.55, 82.69)% vs 73.28 (71.27, 75.05)%; Z=-2.28, P=0.023], and the nasal humidification efficiency decreased [99.50 (97.69, 101.30)% vs 86.09 (79.33, 87.16)%; Z=-2.28, P=0.023]. The ENS6Q total scores of all patients in the case group were less than 11 points. There was a moderate negative correlation between the proportion of the inferior airflow in the post-surgical nasal cavity negatively and the ENS6Q total scores (rs=-0.50, P=0.029). Conclusions: The sinonasal anatomic changes after the endoscopic anterior skull base surgery alter the nasal airflow patterns, reducing the efficiency of nasal heating and humidification. However, the post-surgical occurrence tendency of the empty nose syndrome is weak.

Effect of nasal swell body on nasal airflow and Artemisia pollen deposition / 临床耳鼻咽喉头颈外科杂志

Objective:The nasal swell body（NSB） consists of the nasal septal cartilage, nasal bone, and swollen soft tissue, all of which are visible during endoscopic and imaging examinations. Although the function of the NSB remains uncertain, there is evidence to suggest that it plays a vital role in regulating nasal airflow and filtering inhaled air. Based on anatomical and histological evidence, it is hypothesized that the NSB is indispensable in these processes. This study aims to investigate the impact of NSB on nasal aerodynamics and the deposition of allergen particles under physiological conditions. Methods:The three-dimensional （3D） nasal models were reconstructed from computed tomography （CT） scans of the paranasal sinus and nasal cavity in 30 healthy adult volunteers from Northwest China, providing basis for the construction of models without NSB following virtual NSB-removal surgery. To analyze the distribution of airflow in the nasal cavity, nasal resistance, heating and humidification efficiency, and pollen particle deposition rate at various anatomical sites, we employed the computed fluid dynamics（CFD） method for numerical simulation and quantitative analysis. In addition, we created fully transparent segmented nasal cavity models through 3D printing, which were used to conduct bionic experiments to measure nasal resistance and allergen particle deposition. Results:①The average width and length of the NSB in healthy adults in Northwest China were （12.85±1.74） mm and （28.30±1.92） mm, respectively. ②After NSB removal, there was no significant change in total nasal resistance, and cross-sectional airflow velocity remained essentially unaltered except for a decrease in topical airflow velocity in the NSB plane. ③There was no discernible difference in the nasal heating and humidification function following the removal of the NSB; ④After NSB removal, the deposition fraction（DF） of Artemisia pollen in the nasal septum decreased, and the DFs post-and pre-NSB removal were（22.79±6.61）% vs （30.70±12.27）%, respectively; the DF in the lower airway increased, and the DFs post-and pre-NSB removal were（24.12±6.59）% vs （17.00±5.57）%, respectively. Conclusion:This study is the first to explore the effects of NSB on nasal airflow, heating and humidification, and allergen particle deposition in a healthy population. After NSB removal from the healthy nasal cavities: ①nasal airflow distribution was mildly altered while nasal resistance showed no significantly changed; ②nasal heating and humidification were not significantly changed; ③the nasal septum's ability to filter out Artemisia pollen was diminished, which could lead to increased deposition of Artemisia pollen in the lower airway.

Bacteriological analysis of nasal secretions in patients with nasal lymphoma / 临床耳鼻咽喉头颈外科杂志

Objective:To investigate the etiological characteristics of nasal bacterial infection in patients with nasal lymphoma. Methods:The results of bacterial culture of nasal secretions from 39 healthy people and 86 patients with nasal lymphoma in the Affiliated Hospital of Qingdao University from January 2019 to June 2022 were retrospectively analyzed, and the differences in nasal bacteria distribution between nasal lymphoma and healthy people were analyzed and compared. Results:Corynebacterium（38.90%） was the most common bacteria in the nasal cavity of healthy people, followed by coagulase-negative Staphylococcus（31.95%）, Staphylococcus epidermidis（15.28%） and Staphylococcus aureus（6.95%）. The most common bacteria in nasal lymphoma patients was Staphylococcus aureus（30.37%）, followed by Corynebacterium（9.63%）, Staphylococcus epidermidis（7.41%） and coagulase negative Staphylococcus（6.67%）. A total of 81 nasal lymphoma patients were detected with bacteria, positive rate is as high as 94.19%（81/86）. Conclusion:Staphylococcus aureus is the main pathogenic bacteria in nasal secretion of patients with nasal lymphoma, which provides guiding significance for the clinical prevention and treatment of nasal lymphoma complicated with infection or not.

Factors affecting nasal drug delivery and design strategies for intranasal drug delivery / 浙江大学学报·医学版

Intranasal drug delivery system is a non-invasive drug delivery route with the advantages of no first-pass effect, rapid effect and brain targeting. It is a feasible alternative to drug delivery via injection, and a potential drug delivery route for the central nervous system. However, the nasal physiological environment is complex, and the nasal delivery system requires "integration of medicine and device". Its delivery efficiency is affected by many factors such as the features and formulations of drug, delivery devices and nasal cavity physiology. Some strategies have been designed to improve the solubility, stability, membrane permeability and nasal retention time of drugs. These include the use of prodrugs, adding enzyme inhibitors and absorption enhancers to preparations, and new drug carriers, which can eventually improve the efficiency of intranasal drug delivery. This article reviews recent publications and describes the above mentioned aspects and design strategies for nasal intranasal drug delivery systems to provide insights for the development of intranasal drug delivery systems.

Study on static parameters of internal nasal valve in 3-dimensional model of nasal cavity space / 中华耳鼻咽喉头颈外科杂志

Objective: To identify the internal nasal valve (INV) and to evaluate its key parameters in the established 3D models of nasal cavity space via Mimics from CT images, in order to provide evidence for quantitative diagnosis of nasal valve compromise. Methods: A total of 32 Han adults without nasal diseases who underwent maxillofacial CT test in Shanghai Ninth People's Hospital from January 2015 to December 2018 were retrospectively recruited, including 16 males and 16 females, with the age ranged from 20 to 80 years (50% age<50 years old). Maxillofacial CT images were used to create 3D model of nasal cavity space. The INV was identified and the following parameters were measured: the angle between the INV and the nasal bone (θINV-B), unilateral cross-sectional area of the INV (AINV-R, AINV-L), total cross-sectional area of the INV (AINV), unilateral height of the INV (HINV-R, HINV-L), unilateral nasal valve angle (αINV-R, αINV-L), and the sum of nasal valve angle (αINV). The AINV in our study was compared with the results of the previously adopted planes (PlaneC, perpendicular to the hard palate and PlaneB, plane perpendicular to the nasal bone). The parameters above were compared among genders, age and race groups. SPSS 26 and GraphPad Prism 9 software were used for statistical analysis and mapping of data. Results: The AINV in our study was (214.87±52.94) mm², which was significantly less than that of PlaneC (254.97±47.80) mm² and PlaneB (226.07±57.36) mm². The measured parameters were as follows: θINV-B was (82.07±7.06)°; AINV-R was (112.66±31.39) mm²; AINV-L was (102.21±27.14) mm²; AINV was (214.87±52.94) mm²; HINV-R was (24.87±4.62) mm; HINV-L was (24.35±4.86) mm; αINV-R was (20.48±2.99)°; αINV-L was (19.65±3.82)°; αINV was (40.13±6.24)°. The AINV-R was larger than AINV-L (t=2.33, P<0.05); The HINV, AINV-R, AINV-L and AINV of males were more than those of females (t value was 5.77, 3.21, 2.91 and 3.52, respectively, all P<0.01). The AINV of the young group (<50 years) was larger than that of the old group (t=2.83, P<0.01); The θINV-B was different between the Han people and the Caucasian (t=2.92,P<0.01). The αINV of the Han people was larger than that of Caucasians (Z=-6.92, P<0.01), but the HINV was smaller (Z=-3.89, P<0.01). Conclusion: The AINV carried out in 3D models of nasal cavity space is significantly smaller than that obtained by the previous methods of CT evaluation. INV static parameters differ among genders, age and race groups.

Endoscopic resection of type D trigeminal schwannoma through nasal sinus approach / 中华外科杂志

Objective: To examine the feasibility and surgical approach of removing type D trigeminal schwannoma through nasal cavity and nasal sinus under endoscope. Methods: Eleven patients with trigeminal schwannoma who were treated in the Department of Otorhinolaryngology, Qilu Hospital of Shandong University from December 2014 to August 2021 were analyzed retrospectively in this study. There were 7 males and 4 females, aged (47.5±13.5) years (range: 12 to 64 years). The neoplasm involved the pterygopalatine fossa, infratemporal fossa, ethmoidal sinus, sphenoid sinus, cavernous sinus, and middle cranial fossa. The size of tumors were between 1.6 cm×2.0 cm×2.0 cm and 5.7 cm×6.0 cm×6.0 cm. Under general anesthesia, the tumors were resected through the transpterygoid approach in 4 cases, through the prelacrimal recess approach in 4 cases, through the extended prelacrimal recess approach in 2 cases, and through the endoscopic medial maxillectomy approach in 1 case. The nasal endoscopy and imaging examination were conducted to detect whether neoplasm recurred or not, and the main clinical symptoms during follow-up. Results: All the surgical procedures were performed under endonasal endoscope, including Gross total resection in 10 patients. The tumor of a 12-year-old patient was not resected completely due to huge tumor size and limited operation space. One patient was accompanied by two other schwannomas located in the occipital region and the ipsilateral parotid gland region originating from the zygomatic branch of the facial nerve, both of which were removed concurrently. After tumor resection, the dura mater of middle cranial fossa was directly exposed in the nasal sinus in 2 cases, including 1 case accompanied by cerebrospinal fluid leakage which was reconstructed by a free mucosal flap obtained from the middle turbinate, the other case was packed by the autologous fat to protect the dura mater. The operation time was (M(IQR)) 180 (160) minutes (range: 120 to 485 minutes). No complications and deaths were observed. No recurrence was observed in the 10 patients with total tumor resection during a 58 (68) months' (range: 10 to 90 months) follow-up. No obvious change was observed in the facial appearance of all patients during the follow-up. Conclusion: Type D trigeminal schwannoma involving pterygopalatine fossa and infratemporal fossa can be removed safely through purely endoscopic endonasal approach by selecting the appropriate approach according to the size and involvement of the tumor.

Influence des facteurs épidémio-cliniques dans le résultat fonctionnel de la septoplastie: étude de 250 cas / Epidemiological and clinical predictive factors of success in septoplasty: Study of 250 patients

to describe the epidemiological and clinical aspects, to evaluate the surgical result and to identify the prognostic factors for the success of septoplasty. Methods: It was a retrospective study including 250 patients operated on for a septoplasty collected over a 6-yearperiod. The evaluation of our results was made using 2 tools: NOSE scale and the visual satisfaction scale. Results: In our series, there was a male predominance with a sex ratio of 1.4. The mean age of the patients was 32.7 years. The medical history was dominated by allergic rhinitis in 38.4% of cases. Nasal trauma was noted in 45.2% of cases. A subjective quantification of respiratory discomfort by the NOSE score made it possible to divide them into 3 groups:Group 1: Severe ON: 65.2% of cases; Group 2: Moderate ON: 31.6% of cases; Group 3: Mild ON: 3.2% of cases. Our analytical study of the epidemiological and clinical factors that may influence the functional results showed that: Severe or moderate overall discomfort, severe ON (NOSE scale> 50) or moderate (NOSE scale between 26 and 50), DS classified zone I, II, III according to the Cottle classification, a quasi-obstructive deviation were considered as a predictor of the success of septoplasty. Conclusion: Several factors can influence the results of a septoplasty that must be considered before any surgical indication.

Hemicraniectomía endonasal por estesioneuroblastoma: informe de un caso / Endonasal hemicraniectomy by esthesioneuroblastoma: report of a case

El estesioneuroblastoma es una neoplasia maligna que se origina del epitelio olfatorio. El tratamiento se establece de acuerdo con su extensión y el grado histológico de atipia y puede incluir cirugía, cirugía más radioterapia o más radioquimioterapia. Se han utilizado diferentes abordajes quirúrgicos que incluyeron incisiones faciales y craneotomía pero, con la mayor experiencia adquirida en cirugía endoscópica de senos paranasales y el trabajo en equipo con el neurocirujano, se han desarrollado técnicas endonasales que posibilitan realizar resecciones oncológicas en pacientes seleccionados, con menos morbilidad, internación breve y sin comprometer el control local de la enfermedad. Describimos el caso clínico de una paciente con un estesioneuroblastoma con invasión intracraneal, que fue tratada con éxito mediante una hemicraniectomía endonasal preservando el bulbo olfatorio contralateral. (AU)

Esthesioneuroblastoma is a malignant neoplasm that originates from the olfactory epithelium. Treatment is established according to its extension and the histological degree of atypia and may include surgery, surgery more radiotherapy or more chemoradiation therapy. Different surgical approaches have been used, including facial incisions and craniotomy, but with the greater experience acquired with endoscopic sinus surgery and teamwork with the neurosurgeon, endonasal techniques have been developed that make it possible to perform oncological resections in selected patients, with less morbidity, brief hospitalization and without compromising local control of the disease. We describe the clinical case of a patient with an esthesioneuroblastoma with intracranial invasion who was successfully treated by endonasal hemicraniectomy preserving the contralateral olfactory bulb. (AU)

Efecto de la expansión ósea maxilar en la vía aérea nasofaríngea: Una revisión bibliográfica / Effect of the maxillary bone expansion on the nasopharyngeal airway. A bibliographic review

Introducción: Uno de los tratamientos indicados para la deficiencia maxilar transversal es la expansión maxilar rápida (REM). El presente artículo trata sobre la terapia REM y muestra, a partir de una revisión bibliográfica, los diversos beneficios que esta puede brindar al paciente y los cambios que puede generar en su anatomía. Objetivos: Abordar el efecto de la terapia REM sobre la vía aérea nasofaríngea. También describir, en base a evidencia científica, los cambios que produce en la morfología y resistencia sobre la vía aérea faríngea. Esto mediante distintos métodos de estudios disponibles actualmente. Materiales y métodos: Se realizó una búsqueda bibliográfica en las bases de datos: PubMed, Clinicalkey y Epistemonikos. Se seleccionaron trabajos publicados en los últimos 8 años en adelante. De un universo total de 77 publicaciones, fueron seleccionados 12 estudios para esta revisión. Se excluyeron estudios en los cuales se realizaban acciones clínicas que escapan al tratamiento ortopédico. También se excluyeron tratamientos realizados para mejorar la vía aérea, basados en el tratamiento ortopédico del crecimiento mandibular. Resultados: En los estudios realizados mediante radiografías cefalométricas se obtuvo un aumento significativo (p <0.05) en el espacio de la vía aérea nasofaríngea, en particular en las medidas AD2 y AD-PtV, después del tratamiento ortodóncico. Por otro lado, AD1 también aumentó, pero no significativamente (p> 0.05). Conclusión: La terapia REM, en pacientes en crecimiento, logra separar la sutura palatina media aumentando el tamaño del piso de las fosas nasales y el volumen en el territorio nasofaríngeo. Se necesitan estudios con un tamaño de muestra mayor y un seguimiento a largo plazo para establecer el éxito de esta terapia.

Introduction: One of the treatments indicated for transverse maxillary deficiency is rapid maxillary expansion (REM). This article deals with REM therapy and shows, based on a bibliographic review, the various benefits that it can generate for the patient and the changes in their anatomy. Objectives: To elucidate the effect of REM therapy on the nasopharyngeal airway. Also expose, based on scientific evidence, the changes that it produces in the morphology and resistance on the pharyngeal airway. This through different study methods currently available. Materials and methods: A bibliographic search was carried out in the databases: PubMed, Clinicalkey and Epistemonikos. From a total universe of 77 publications, 12 studies were selected for this review. Results: In the studies carried out using cephalometric radiographs, a significant increase (p < 0.05) in the nasopharyngeal airway space was obtained, particularly in the AD2 and AD-PtV measurements, after orthodontic treatment. On the other hand, AD1 also increased, but not significantly (p > 0.05). Conclusion: REM therapy, in growing patients, manages to separate the middle palatal suture by increasing the size of the floor of the nostrils and the volume in the nasopharyngeal territory. Studies with a larger sample size and long-term follow-up are needed to establish the success of this therapy.

Prevalencia de portación nasal de Staphylococcus aureus sensible y resistente a la meticilina en candidatos a artroplastia total de cadera o rodilla / Prevalence of nasal carriage of methicillin-sensitive and methicillin-resistant Staphylococcus aureus in candidates for total hip or knee arthroplasty

INTRODUCIÓN Las infecciones perioperatorias en cirugía de reemplazo articular son fuente importante de morbimortalidad, así como de altos costos económicos y sociales, tanto para el paciente como para su entorno. La colonización preoperatoria por Staphylococcus aureus ha sido reconocida como un factor de riesgo importante para desarrollar una infección de sitio quirúrgico.El objetivo de este estudio es conocer la prevalencia de portación nasal de S. aureus, tanto sensible a la meticilina (SASM) como resistente a la meticilina (SARM), en pacientes candidatos a cirugía de reemplazo articular de cadera o rodilla. MATERIALES Y MÉTODOS Se realizó un estudio observacional de una cohorte retrospectiva de pacientes con indicación de artroplastia total de cadera (ATC) y rodilla (ATR) electiva por artrosis severa en un hospital público de Chile. Los pacientes fueron sometidos a tamizaje preoperatorio de portación, cultivándose muestras obtenidas mediante hisopado de ambas fosas nasales. Los datos del laboratorio fueron recopilados y presentados como porcentaje de portación de S. aureus. RESULTADOS Se estudiaron 303 pacientes consecutivos de ATC y 343 de ATR. En total, 483 de los 646 pacientes (74,7%) tuvieron estudio preoperatorio de portación nasal. Se identificaron 123 pacientes (25,4%) portadores de S. aureus, de los cuales sólo 2 (0,41%) casos correspondieron a SARM. CONCLUSIÓN La prevalencia de portación nasal de S. aureus obtenida fue de 25%, similar a lo reportado en otras series. La prevalencia de SARM (0.41%), sin embargo, estuvo bajo lo descrito en la literatura internacional (0,6­6%). Sería de utilidad, dada la alta prevalencia de portación descrita en nuestro trabajo y de acuerdo a evidencia publicada recientemente, realizar protocolos de descolonización universales, sin necesidad de realizar tamizaje preoperatorio.

INTRODUCTION Surgical-site infections in joint replacement surgery are an important source of morbidity and mortality that entail high economic and social burden both for the patient and their environment. Preoperative colonization by Staphylococcus aureus has been recognized as an important risk factor for the development of surgical-site infection. The aim of the present study is to determine the prevalence of nasal colonization by S. aureus, both methicillin-sensitive (MSSA) and methicillin-resistant (MRSA) in patients who are candidates for total replacement of the hip or knee joints. MATERIALS AND METHODS A retrospective observational study of a cohort of 646 patients with an indication to undergo total hip arthroplasty (THA) or total knee arthroplasty (TKA) due to severe osteoarthritis was performed in a Public Hospital in Chile. The patients were submitted to a preoperative screening for S. aureus carriage, and the culture samples were obtained by swabbing both nostrils. The laboratory data was collected and presented as a percentage of carriage. RESULTS We consecutively examined 303 THA and 343 TKA patients. A total of 483 of the 646 patients (74.7%) underwent a preoperative study of nasal carriage. We identified 123 (25.4%) S. aureus carriers, and only found 2 (0.41%) cases corresponding to MRSA. CONCLUSION We found a prevalence of nasal carriage of S. aureus of 25.4%, a rate similar to that reported in other series. The prevalence of MRSA (0.41%), however, was lower than that reported in the international literature (0.6­6%). Given the high prevalence of carriage described in our work and according to recently published data, it would be worthwhile to carry out universal decolonization protocols, without the need for preoperative screening.

Relato de caso: linfoma de células t/nk extranodal tipo nasal / Case Report: Extranodal Nk/T-Cell Lymphoma, N a s a l Ty p e / Reporte de caso: linfoma extranodal de células t/nk de tipo nasal

Introdução: O linfoma não-Hodgkin é dividido em linfomas de células B e linfomas de células T, e o linfoma extranodal de células T / NK do tipo nasal está dentro do último grupo.Relato de caso: Paciente do sexo masculino de 30 anos, relata que há 6 meses, de forma progressiva e de início insidioso, apresenta tumor cervical à direita de crescimento progressivo, pelo qual foi encaminhado ao ambulatório de cabeça e pescoço onde apresentou seus principais sinais e sintomas adenopatia cervical direita, sintoma B e tumoração ao nível da nasofaringe, envolvendo o teto, parede posterior e face lateral; se movimenta com auxílio, com extenso conglomerado linfonodal supraclavicular direito, eritematoso, com calor local, além de áreas de ulceração e secreção serosa.Conclusão: O diagnóstico e tratamento precoces desta doença são as únicas ferramentas para melhorar o mau prognóstico e o grave impacto na qualidade de vida dos pacientes que a padecem

Introduction: Non-Hodgkin's lymphomas are divided into B-cell lymphomas and T-cell lymphomas, and extranodal NK/T-cell lymphoma, nasal type, is in the latter group.Case report: A 30-year-old male patient, for six months, progressively and with an insidious onset, has had a right-sided cervical tumor with progressive growth. He came to a head and neck outpatient clinic where the main signs and symptoms detected were right cervical lymphadenopathy, B-symptoms, and a tumor in the nasopharynx affecting the roof, posterior wall, and lateral wall. The patient moves with assistance and has an enlarged, erythematous warm right supraclavicular lymph node conglomerate. In addition, he has some ulcerated areas with serous drainage.Conclusion: Early diagnosis and treatment of this disease are the only tools to improve these patients' poor prognosis and severely deteriorated quality of life.

Introducción:El linfoma no Hodgkin se divide en linfomas de células B y linfomas de células T; y en este último grupo se encuentra el linfoma extraganglionar de células T / NK de tipo nasal.Caso clínico: Un paciente masculino de 30 años refiere que durante 6 meses de forma progresiva, y con un início insidioso, presenta una tumoración cervical en el lado derecho de crecimiento progresivo, por lo que acude a la consulta externa de cabeza y cuello, donde los signos y síntomas principales fueron adenopatía cervical derecha, síntoma B, y una tumoración a nivel de nasofaringe, que afecta el techo, la pared posterior y la cara lateral. Se moviliza con ayuda, con un extenso conglomerado ganglionar supraclavicular derecho, eritematoso, con calor local. Además, también muestra algunas áreas de ulceración y secreción serosa. Conclusión: El diagnóstico y tratamiento precoz de esta enfermedad son las únicas herramientas para mejorar el mal pronóstico y el deterioro severo en la calidad de vida de los pacientes que la padecen

Desviación septal nasal en relación con las deformidades nasales externas: un estudio observacional / Nasal septal deviation in relation to external nasal deformities: an observational study

La nariz es estructuralmente compleja, y esta complejidad da como resultado variaciones de forma nasal. El estudio tuvo como objetivo determinar las desviaciones septales nasales que ocurren en relación con las deformidades nasales externas. Se realizó un estudio transversal en el departamento de oído, nariz y garganta, en nuestro hospital. Todos los individuos que tienen desviación septal con deformidad nasal externa de noviembre de 2017 a noviembre de 2018. Esos pacientes serán evaluados mediante un examen clínico integral de la oreja, la nariz y la garganta. Los síntomas del paciente se clasifican con el cuestionario de prueba china nasal -22. Las deformidades septales se clasificaron utilizando la clasificación Mladina modificada. Las deformidades nasales externas se clasificaron empleando la clasificación de Yong Jo Jang. Aproximadamente, el 43% eran hombres y el 57% eran mujeres. Alrededor del 90% de los pacientes de 21 años a 50 años. Alrededor del 58% de los pacientes eran sintomáticos, mientras que el resto del 42% no tenía síntomas. Al correlacionar los síntomas con el tipo de desviación, se encontró significativamente asociación (P = 0.05). La mayoría de las personas se encuentran en el grupo de mediana edad. Tipo II y IV son los tipos más comunes de NSD, mientras que el tipo I es un final común. El encuentro notable de nuestro estudio es que los pacientes no tenían deformidad

The nose is structurally complex, and this complexity results in nasal shape variations. The study aimed to determine the nasal septal deviations occurrence in relation to external nasal deformities. A crosssectional study was conducted in Department of Ear, Nose and Throat, in our hospital. All the individuals having septal deviation with external nasal deformity from November 2017 to November 2018. Those patients be evaluated by comprehensive clinical examination of ear, nose and throat. Patient's symptoms are rated with Sino-Nasal Test -22 questionnaire. Septal deformities were classified using Mladina classification modified. External nasal deformities were classified employing Yong Jo Jang's classification. Approximately, 43% were males and 57% were females. About 90% of patients aged from 21 years to 50 years. About 58% of patients were symptomatic while the rest 42% were without symptoms. On correlating the symptoms with the type of deviation it was found significantly association (P=0.05). Majority of individuals are in the middle age group. Type II and IV are the most common types of NSD whereas type I is a common END. Noteworthy finding of our study is patients had no deformity.

Portación nasal de Staphylococcus aureus en el personal de salud de áreas críticas de un Hospital Pediátrico durante julio-setiembre 2018 / Nasal carriage of Staphylococcus aureus in health personnel in critical areas of a Pediatric Hospital during July-September 2018 / Transporte nasal de Staphylococcus aureus em profissionais de saúde em áreas críticas de um Hospital Pediátrico durante julho-setembro de 2018

Las infecciones intrahospitalarias (IIH) son causa de elevada morbimortalidad y representan un problema sanitario importante. El personal de salud es reservorio y potencial transmisor de los agentes etiológicos de las mismas. S. aureus es uno de los microorganismos implicados, por lo tanto es importante conocer la frecuencia de portación en el personal de salud y establecer el perfil de susceptibilidad antimicrobiana para contribuir con la elaboración de medidas de prevención incluyendo actividades educativas. Objetivo: Conocer la frecuencia de portación de S. aureus, distribución y antibiotipos de las cepas presentes en el personal sanitario del Hospital Pediátrico de Referencia (HPR). Materiales y métodos: Se realizó un estudio descriptivo durante el periodo julio-setiembre del año 2018. Se incluyeron muestras de hisopados nasales de trabajadores de la salud de distintas áreas de internación que consintieron participar en el estudio. Se excluyeron aquellos que recibieron antibióticos dentro de los 3 meses previos al estudio. Las muestras fueron sembradas en agar sangre ovina al 5% (ASO) y se incubaron a 35-37ºC en aerobiosis por 24-48 horas. La identificación de las colonias sospechosas de Staphylococcus aureus por métodos convencionales y MALDI-TOF. El patrón de resistencia antimicrobiana de S. aureus se detectó por disco-difusión. En los cultivos resistentes a meticilina (SAMR) se determinó la presencia del gen mecA y se realizó la tipificación del SCCmec por pruebas de reacción en cadena de polimerasa. Resultados: Se obtuvieron 225 hisopados a partir de 225 trabajadores, presentaron desarrollo 212. En 49 se recuperaron cultivos de S. aureus. Correspondieron a SAMR 11 de las 49 cepas, todas portaban el gen mecA. Hubo predominio en el personal de enfermería (7/11), en los servicios de hemato-oncología (3/11) y cuidados intensivos neonatales (4/11). Asociaron resistencia a macrólidos y clindamicina 8 de 11 aislamientos SAMR, a gentamicina 2 y a mupirocina uno. El SCCmec más frecuentemente identificado fue el tipo IV (7/11). Conclusiones: Los resultados muestran la presencia de cepas SAMR entre el personal de salud del CHPR y aportan información complementaria para efectuar prevención y control de las IIH, actuando sobre todo en el personal de salud encargado de la atención de pacientes susceptibles.

Hospital-acquired infections (IIH) are a cause of high morbidity and mortality and represent a major health problem. Health personnel are reservoirs and potential transmitters of their etiological agents. S. aureus is one of the microorganisms involved, therefore it is important to know the frequency of carriage in health personnel and establish the antimicrobial susceptibility profile to contribute to the development of prevention measures, including educational activities. Objective: To know the frequency of carriage of S. aureus, distribution and antibiotypes of the strains present in the health personnel of the Reference Pediatric Hospital (HPR). Materials and methods: A descriptive study was carried out during the period July-September 2018. Nasal swab samples from health workers from different hospitalization areas who agreed to participate in the study were included. Those who received antibiotics within 3 months prior to the study were excluded. The samples were seeded in 5% sheep blood agar (ASO) and incubated at 35-37ºC in aerobiosis for 24-48 hours. Identification of suspicious Staphylococcus aureus colonies by conventional methods and MALDI-TOF. The antimicrobial resistance pattern of S. aureus was detected by disc diffusion. In methicillin-resistant cultures (MRSA), the presence of the mecA gene was determined and SCCmec was typified by polymerase chain reaction tests. Results: 225 swabs were obtained from 225 workers, 212 showed development. S. aureus cultures were recovered from 49. 11 of the 49 strains corresponded to MRSA, all of them carried the mecA gene. There was a predominance in the nursing staff (7/11), in the hematology-oncology services (3/11) and neonatal intensive care (4/11). They associated resistance to macrolides and clindamycin in 8 of 11 MRSA isolates, 2 to gentamicin, and 1 to mupirocin. The most frequently identified SCCmec was type IV (7/11). Conclusions: The results show the presence of MRSA strains among the health personnel of the CHPR and provide complementary information to carry out prevention and control of IIH, acting especially on the health personnel in charge of the care of susceptible patients.

As infecções hospitalares (HII) são causa de alta morbidade e mortalidade e representam um importante problema de saúde. Os profissionais de saúde são reservatórios e potenciais transmissores de seus agentes etiológicos. O S. aureus é um dos micro-organismos envolvidos, por isso é importante conhecer a frequência de portadores em profissionais de saúde e estabelecer o perfil de suscetibilidade antimicrobiana para contribuir no desenvolvimento de medidas de prevenção incluindo atividades educativas. Objetivo: Conhecer a frequência de portadores de S. aureus, distribuição e antibiótipos das cepas presentes no pessoal de saúde do Hospital Pediátrico de Referência (HPR). Materiais e métodos: Foi realizado um estudo descritivo durante o período de julho a setembro de 2018. Foram incluídas amostras de swab nasal de profissionais de saúde de diferentes áreas de internação que concordaram em participar do estudo. Aqueles que receberam antibióticos nos 3 meses anteriores ao estudo foram excluídos. As amostras foram semeadas em 5% de ágar sangue de carneiro (ASO) e incubadas a 35-37ºC em aerobiose por 24-48 horas. Identificação de colônias suspeitas de Staphylococcus aureus por métodos convencionais e MALDI-TOF. O padrão de resistência antimicrobiana de S. aureus foi detectado por difusão em disco. Em culturas resistentes à meticilina (MRSA), a presença do gene mecA foi determinada e SCCmec foi tipificado por testes de reação em cadeia da polimerase. Resultados: 225 swabs foram obtidos de 225 trabalhadores, 212 apresentaram desenvolvimento. Culturas de S. aureus foram recuperadas de 49. 11 das 49 cepas correspondiam a MRSA, todas carregavam o gene mecA. Houve predominância na equipe de enfermagem (7/11), nos serviços de hematologia-oncologia (3/11) e de terapia intensiva neonatal (4/11). Eles associaram resistência a macrolídeos e clindamicina em 8 de 11 isolados de MRSA, 2 à gentamicina e 1 à mupirocina. O SCCmec mais frequentemente identificado foi o tipo IV (7/11). Conclusões: Os resultados mostram a presença de cepas de MRSA entre os profissionais de saúde do CHPR e fornecem informações complementares para realizar a prevenção e controle da HII, atuando principalmente sobre os profissionais de saúde responsáveis ​​pelo atendimento de pacientes suscetíveis.

Endoscopic transsphenoidal endonasal surgery in pituitary adenomas / Cirugía endoscópica vía endonasal transesfenoidal en adenomas de hipófisis

The pituitary adenomas comprise the largest part of pituitary neoplasms, representing between 9 and 12% of primary brain tumors. Currently, the treatment of election is the surgical, the trans-sphenoidal endonasal path has provided a broader panoramic view, being feasible more delicate and safe procedures. The objective of this study was to describe the management of pituitary adenomas by endoscopic surgery trans-sphenoidal endonasal path. This is a study in a series of cases, with a sample of 17 patients who met the selection criteria and were attended at the José Carrasco Hospital Arteaga, Cuenca - Ecuador, period 2018 - 2019. All patients presented informed consent for the performance of the surgery and the subsequent dissemination of the results. The 53% of the population belonged to the male gender, 47% were patients between 40 and 60 years old, 65% were detected with macroadenomas, and 29% presented complications such as nasal obstruction, sphenoiditis and headache, the residual tumor stage was due 24%.Endoscopic surgery trans-sphenoidal endonasal path is a safe, minimally invasive tool, a surgical alternative with a high rate of tumor excision, better control and fewer complications, which reduces the morbidity of patients.

Los adenomas de hipófisis comprenden la mayor parte de neoplasias hipofisiarias, representando entre el 9 y 12% de los tumores cerebrales primarios. En la actualidad el tratamiento de elección es el quirúrgico, la vía endonasal transesfenoidal ha proporcionado una visión panorámica más amplia, siendo factibles procedimientos más delicados y seguros. El objetivo de este estudio fue describir el abordaje de adenomas de hipófisis mediante cirugía endoscópica vía endonasal transesfenoidal. Diseñamos un estudio de corte longitudinal, con una muestra de 17 pacientes que cumplieron con los criterios de selección y fueron atendidos en el Hospital José Carrasco Arteaga de la ciudad de Cuenca - Ecuador, periodo 2018 - 2019. Todos los pacientes presentaron consentimiento informado para la realización de la cirugía y la posterior difusión de los resultados. El 53% de la población pertenecieron al sexo masculino, 47% fueron pacientes entre 40 y 60 años, al 65% se le detectó macroadenomas, el 29% presentaron complicaciones como obstrucción nasal, esfenoiditis y cefalea, la tasa de tumor residual fue del 24%. La cirugía endoscópica vía endonasal transesfenoidal es una herramienta segura, mínimamente invasiva, una alternativa quirúrgica con una elevada tasa de exéresis tumoral, mejor control y menos complicaciones, que reduce la morbilidad de los pacientes.

Nasosinusal Endoscopic Anatomy and Physiology

The present article focuses on the analysis of the nasal cavity's anatomy succinctly and descriptively. This essay was carried out through a bibliographic review, directed to the detailed anatomy of the nasal cavity, and the structures that form its sinuses. We have identified the need formore studies directed to the related anatomical area so that the improved knowledge of this region ensures a nasoendoscopic treatment with better effectiveness and no complications.

Nasal Mucoepidermoid Carcinoma after Radiotherapy: Case Report

Introduction Mucoepidermoid carcinoma (MEC) is a tumor originated from the epitheliumof the glandular excretory ducts and has highly variable biological potential. It is the most prevalent cancer of the salivary glands. The present report aims to describe a case of nasal mucoepidermoid carcinoma that developed after adjuvant radiotherapy (RT) treatment of a recurrent pituitary macroadenoma. Case Report Male patient, 62 years old, presented with recurrent nasal epistaxis on the right, associated with intense pulsatile headache, visual analogical scale (VAS) 10/10, with improvement only with the use of opioids andmorphine. After undergoing oncological screening and study by imaging exams, the presence of an expansive seal lesion with suprasellar extension was seen, involving the medial wall of the cavernous segment of the right carotid artery and the anterior cerebral artery, as well as the presence of a new expansive lesion in the right nasal cavity, with ethmoid bone invasion superiorly and medial orbit wall invasion laterally, compressing the ipsilateral optic nerve canal. Discussion Sinonasal neoplasms represent a small portion of all malignancies of the upper aerodigestive tract, accounting for<5% of these neoplasms. The development of MEC involves risk factors such as occupational issues, history of trauma and surgery involving the nasal area, and radiation exposure, as in previous RT. Conclusion Mucoepidermoid carcinoma is an uncommon neoplasia and can be associated with RT treatment, as used in cases of recurrent pituitary macroadenoma. In general, surgical resection to obtain free margins of neoplastic tissue is the aimed treatment, seeking better prognosis.