Chronic Bi-Maxillary Osteomyelitis Caused by Actinomycetes in a Patient with Severe COVID-19 / Osteomyelitis bi-maxilar crónica causada por Actinomycetes en un paciente con COVID-19 severo

Abstract Osteomyelitis is defined as the inflammation of the either medullary, cortical, or cancellous bone, including nerves and blood vessels, causing necrosis and bone sequestrum formation; this condition has become a rare pathology, and odontogenic infections are considered the most frequent causal factor. This case shows a patient with bi-maxillary osteomyelitis caused by Actinomyces spp, which was worsened for severe COVID-19 infection. Patient was submitted at surgery as, amplified total bilateral maxillectomy through the surgical technique Weber-Fergusson, and prolonged use of combination of antibiotics, achieved a good recovery. Two years later follow- up, the patient no show imaging or clinical evidence of the infection of osteomyelitis. The present case shows an interesting relationship between a rare infection and its association with COVID-19.

Resumen La osteomielitis se define como la inflamación del hueso medular, cortical o esponjoso, incluyendo nervios y vasos sanguíneos, causando necrosis y formación de secuestro óseo; esta condición es una patología rara, y las infecciones odontogénicas son consideradas como el factor causal más frecuente. En este caso, se muestra un paciente con osteomielitis bi-maxilar causada por Actinomyces spp, la cual empeoró por la infección de COVID-19 severo. El paciente fue sometido a una cirugía, maxilectomía bilateral total amplificada, a través de la técnica quirúrgica de Weber- Fergusson, y el uso prolongado de una combinación de antibióticos, logrando una buena recuperación. A los 2 años de seguimiento, el paciente no mostró evidencia clínica o imagenológica de la infección de osteomielitis. El presente caso muestra una interesante relación entre una infección rara y su asociación con COVID-19.

Menopausia quirúrgica en pacientes con mutación BRCA, el papel de la terapia hormonal / Surgical Menopause in Patients with BRCA Mutation, the Role of Hormone Therapy

Introducción: las mujeres con mutación BRCA1/2 (mBRCA) tienen un riesgo aumentado de desarrollar cáncer de mama (CM) y ovario (CO). La salpingo-oforectomía bilateral (SOB) se asocia con la reducción del riesgo del 80% para CO y un 50% para CM. Se recomienda realizarla entre los 35 y 40 años. Como consecuencia se produce una menopausia prematura, con un impacto negativo sobre la calidad de vida por la presencia de síntomas climatéricos, aumento del riesgo de enfermedad cardiovascular, osteoporosis y riesgo de alteración cognitiva. La terapia hormonal (THM) es el tratamiento más eficaz para la prevención de estos síntomas. Estado del arte: distintos estudios han demostrado un mayor riesgo de CM en mujeres posmenopáusicas que reciben THM en particular con terapia combinada, estrógeno + progesterona (E+P). Según el metanálisis de Marchetti y cols., en las mujeres portadoras de mBRCA que recibieron THM, no hubo diferencias en el riesgo de CM comparando E solo con E+P. En el estudio de Kotsopoulos, incluso se encontró un posible efecto protector en aquellas que usaron E solo. Otro estudio en portadoras sanas demostró que, en las mujeres menores de 45 años al momento de la SOB, la THM no afectó las tasas de CM. Sin embargo, en las mujeres mayores de 45 años, las tasas de CM fueron más altas. Como el esquema de E+P se asocia con un mayor riesgo relativo (RR) de CM, las dosis de progestágenos utilizados se deberían limitar, eligiendo derivados naturales de progesterona, de uso intermitente para disminuir la exposición sistémica. Según diferentes guías internacionales, a las portadoras de mBRCA sanas que se someten a una SOB se les debe ofrecer THM hasta la edad promedio de la menopausia. Conclusión: la menopausia prematura disminuye la expectativa de vida; es por ello que una de las herramientas para mejorar y prevenir el deterioro de la calidad de vida es la THM. El uso de THM a corto plazo parece seguro para las mujeres portadoras de mBRCA que se someten a una SOB antes de los 45 años, al no contrarrestar la reducción del riesgo de CM obtenida gracias a la cirugía. (AU)

Introduction: women with BRCA1/2 (mBRCA) mutation have an increased risk of developing breast (BC) and ovarian (OC) cancer. Bilateral salpingo-oophorectomy (BSO) is associated with an 80% risk reduction for OC and 50% for BC. The recommended age for this procedure is 35 to 40 years. The consequence is premature menopause, which hurts the quality of life due to the presence of climacteric symptoms, increased risk of cardiovascular disease, osteoporosis, and a higher risk of cognitive impairment. Hormone therapy (MHT) is the most effective treatment for preventing these symptoms. State of the art: different studies have shown an increased risk of BC in postmenopausal women receiving MHT, particularly with combined therapy, estrogen + progesterone (E+P). According to the meta-analysis by Marchetti et al., in women carrying mBRCA who received MHT, there was no difference in the risk of BC compared to E alone with E+P. In the Kostopoulos study, there was also a possible protective effect in those who used E alone. Another study in healthy carriers showed that in women younger than 45 years at the time of BSO, MHT did not affect BC rates. However, in women older than 45 years, BC rates were higher. As the E+P scheme is associated with a higher RR of BC, the doses of progestogens should be limited, choosing natural progesterone byproducts of intermittent use to decrease systemic exposure. According to various international guidelines, healthy mBRCA carriers undergoing BSO should be offered MHT until the average age of menopause. Conclusion: premature menopause decreases life expectancy, which is why one of the tools to improve and prevent deterioration of quality of life is MHT. Short-term use of MHT appears safe for women with mBRCA who undergo BSO before age 45 as it does not counteract the reduction in the risk of MC obtained by surgery. (AU)

Bilateral Variation of the Vertebral Artery: Report of a Case and its Clinical Implication / Variación Bilateral de la Arteria Vertebral; Reporte de un Caso y su Implicancia Clínica

SUMMARY: There are many reports on anatomical variations of the vertebral arteries, which may be related to origin, trajectory, caliber, and side. Bilateral variations are less frequent, however, and less common are bilateral variants that differ from each other. The aim of this work was to report the presence of a bilateral variation of the vertebral artery and its functional and clinical implications. Dissection of a female cadaver, fixed in 10 % buffered formaldehyde, which had not undergone any previous surgeries in the study area and had anatomical variations in both vertebral arteries. In each one, follow-up was done from its origin to its end, determining its trajectory, diameters, branching, and anatomical relations. A left vertebral artery was found, starting in the aortic arch and making a sinuous trajectory of 4 curvatures to enter the transverse foramen of C4. The right vertebral artery began as the first branch of the subclavian artery. Its initial trajectory was rectilinear, followed by a right concave curve, a 360° loop that included a second ascending curve, and ended straight before entering the transverse foramen of C6. The coexistence of bilateral variations in the vertebral arteries is possible. This atypical situation can potentially generate vascular and neurological pathologies, but with different symptoms and causes. Knowing these variations and deliberately searching for them will enable the specialist to make a suitable differential diagnosis.

Existen múltiples reportes sobre variaciones anatómicas de las arterias vertebrales, las que se pueden relacionar con origen, trayecto, calibre y lateralidad. Sin embargo, las variaciones bilaterales son menos frecuentes, y menos común es que las variantes bilaterales sean diferentes entre ellas. El objetivo de este trabajo fue reportar la presencia de una variación bilateral de la arteria vertebral y su implicancia funcional y clínica. Disección en un cadáver de sexo femenino, fijado en formaldehido tamponado al 10 %, el cual no presentaba intervenciones quirúrgicas previas en la región de estudio y que tenía variaciones anatómicas en ambas arterias vertebrales. En cada una se realizó seguimiento desde su origen hasta su terminación, pudiendo determinar su trayecto, diámetros, ramificaciones y relaciones anatómicas. Se encontró una arteria vertebral izquierda originada en el arco aórtico, que realizaba un trayecto sinuoso de 4 curvaturas e ingresaba al foramen transverso de C4. La arteria vertebral derecha se originaba como primera rama de la arteria subclavia. Su trayecto inicial era rectilíneo seguido por una curva de concavidad derecha, un loop (giro) de 360° que incluía una segunda curva ascendente y terminaba en dirección recta antes de ingresar al foramen transverso de C6. La coexistencia de variaciones bilaterales en las arterias vertebrales es posible. Esta situación atípica, potencialmente puede generar en la persona patologías neurológicas de origen vascular, pero con sintomatología y causas diferentes. Conocer estas variaciones y realizar una búsqueda intencionada de ellas permitirá el especialista realizar un adecuado diagnóstico diferencial.

Spontaneous bilateral pneumothorax in a previously healthy COVID-19 patient: A case report

Coronavirus disease 2019 (COVID-19) is commonly linked with mild cough, fever, and shortness of breath symptoms. However, there have been reports of pneumothorax, which particularly occurred at least 1 week following symptom onset in elderly COVID-19 patients. Spontaneous pneumothorax (SP) is an uncommon but possibly fatal complication of COVID-19 pneumonia and is rarely reported in non-intubated patients. We report a case of a healthy, non-smoker 35-year-old young woman who presented with a 7-day cough, fever, and sudden shortness of breath. She was diagnosed with severe COVID-19 pneumonia, experienced a right SP, and developed a second pneumothorax on the contralateral side. She improved gradually following chest tube insertion in the right lung and conservative management for the left pneumothorax.

Exploring the Bilateral Comparisons of Articular Surfaces of Talus: An Observational Study at Tertiary Health Care Center in Pune City

Background: The existing conclusive data show variations in the subtalar joint regarding its morphological features and articulation of bones. Inadequate studies exist on the morphometry of articular surfaces of the talus which may help in surgical interventions and development of implants and prostheses in diverse populations. Purpose: The current study was undertaken to conduct a bilateral comparison of parameters of articulating surfaces of talus. Material and Methods: An observational study design was carried out at one of the private medical colleges in the Pune district of Maharashtra. A total of 100 (fifty-one from right side and forty-nine left-sided tali) dry human talar bones were collected and various dimensions of articular surfaces of bones were measured by Digital Vernier Caliper and Ruler. The data analysis was performed and results were tabulated and presented graphically. Results: There was a statistically significant difference (p<0.05) in bilateral measurements of lateral articular surface height (LASH) of talar bones. The difference was not significant (p>0.05) for all other parameters. Conclusions: The study inferences can be applied as a guide and baseline information for surgical measures, inflammatory disease management, and forensic anthropologists.

Músculo Esternal Bilateral, Descripción de un Caso e Implicancias Clínicas / Bilateral Sternal Muscle, Description of a Case and Clinical Implications

El músculo esternal corresponde a una variante muscular supernumeraria de la musculatura torácica, cuya descripción más antigua se remonta al año 1604. A lo largo de la historia ha sido denominado músculo "epiesternal", "preesternal", "recto torácico" o "recto esternal". Se ubica entre la fascia superficial y el músculo pectoral mayor, tiene una prevalencia de entre 3 % y 8 % en la población general, se presenta de forma unilateral o bilateral exhibiendo una alta variabilidad interracial y puede ser motivo de dilemas diagnósticos durante cirugías y exámenes de imagen. Disección en un cadáver adulto de sexo masculino. Se encontraron dos músculos esternales conectados superiormente por un tendón central. El músculo esternal derecho se extendía desde el manubrio esternal hasta el séptimo cartílago costal derecho. El músculo esternal izquierdo se extendía desde el manubrio esternal hasta el sexto cartílago costal izquierdo. Su inervación estaba dada por ramos cutáneos anteriores de los nervios intercostales y su vascularización por ramas perforantes provenientes de los vasos torácicos internos. El músculo esternal presenta una alta variabilidad morfológica y su prevalencia se ve influenciada por factores raciales. Conocer esta variación muscular enriquece la capacidad diagnóstica y quirúrgica reduciendo la posibilidad de iatrogenia.

SUMMARY: The sternal muscle corresponds to a supernumerary muscle variant of the thoracic musculature, whose oldest description dates to 1604. Throughout history it has been called the "episternal", "presternal", "rectus thoracis" or "rectus sternalis" muscle. It is located between the superficial fascia and the pectoralis major muscle, has a prevalence of between 3 % and 8 % in the general population, presents unilaterally or bilaterally, exhibits a high interracial variability and can be the cause of diagnostic dilemmas during surgery and imaging examinations. Dissection in an adult male cadaver. Two sternal muscles were found connected superiorly by a central tendon. The right sternal muscle extended from the sternal manubrium to the right seventh costal cartilage. The left sternal muscle extended from the sternal manubrium to the left sixth costal cartilage. The innervation was given by anterior cutaneous branches of the intercostal nerves and the vascularization by perforating branches coming from the internal thoracic vessels. The sternal muscle presents a high morphological variability and the prevalence is influenced by racial factors. Knowing this muscle variation enriches the diagnostic and surgical capacity, reducing the possibility of iatrogenesis.

Split cricoideo anterior posterior: una novedosa técnica para evitar la traqueotomía en parálisis cordal bilateral en pacientes pediátricos / Posterior anterior cricoid split: a cutting-edge technique to avoid tracheostomy in bilateral cordal paralysis in pediatric patients

Introducción: La parálisis cordal bilateral en aducción es la segunda causa de estridor congénito y genera una grave obstrucción de la vía aérea, debutando con estridor. La traqueotomía ha sido durante mucho tiempo el gold estándar para el tratamiento de esta afección, no exenta de complicaciones. Existen procedimientos que intentan evitar la traqueotomía, como el split cricoideo anterior posterior endoscópico (SCAPE). Objetivo: Presentar experiencia con SCAPE en pacientes pediátricos como tratamiento alternativo de parálisis cordal bilateral en aducción. Material y Método: Análisis retrospectivo de los resultados quirúrgicos obtenidos en pacientes con parálisis cordal bilateral en aducción tratados con SCAPE entre enero de 2016 y diciembre de 2019 en el Hospital Guillermo Grant Benavente de Concepción, Chile. Resultados: Siete pacientes se sometieron a SCAPE. Todos los pacientes presentaban insuficiencia respiratoria severa, cinco requirieron asistencia ventilatoria mecánica. Seis pacientes tenían el diagnóstico de parálisis cordal bilateral (PCB) congénita y uno PCB secundaria a tumor de tronco cerebral. Cuatro pacientes presentaron comorbilidad de la vía aérea: dos pacientes presentaron estenosis subglótica grado I y dos pacientes presentaron laringomalacia que requirió manejo quirúrgico. Los días promedio de intubación fueron once días. Ningún paciente requirió soporte ventilatorio postoperatorio, sólo un paciente recibió oxigenoterapia nocturna debido a hipoventilación secundaria a lesión de tronco. Ningún paciente ha presentado descompensación respiratoria grave. Un 40% ha recuperado movilidad cordal bilateral. Conclusión: Split cricoideo anteroposterior endoscópico es una alternativa eficaz para tratar el PCB en pacientes pediátricos. Nuestro estudio evidencia que es una alternativa a la traqueotomía, con excelentes resultados y menor morbimortalidad.

Introduction: Bilateral vocal fold paralysis in adduction is the second cause of congenital stridor and generates a serious obstruction of the airway. Tracheostomy has long been the gold standard for the treatment of this condition, but it has inherent complications. There are procedures that try to avoid tracheotomy, such as the endoscopic anterior posterior cricoid split (EAPCS). Aim: Present our experience with EAPCS in pediatric patients as a treatment for bilateral vocal fold paralysis in adduction. Material and Method: Retrospective analysis of the surgical results obtained in patients with bilateral vocal cord paralysis in adduction treated with EAPCS between January 2016 and December 2019 at Guillermo Grant Benavente Hospital in Concepción, Chile. Results: Seven patients underwent EAPCS. All patients had severe respiratory failure, five required mechanical ventilation assistance. Six patients were diagnosed with congenital bilateral cord palsy (BCP) and one BCP secondary to a brainstem tumor. Four patients had airway comorbidity: two patients had grade I subglottic stenosis and two patients had laryngomalacia that required surgical management. The average days of intubation were eleven days. No patient required post op invasive/non-invasive ventilation, only one patient received nocturnal oxygen therapy due to hypoventilation secondary to trunk injury. None of the patients has presented severe respiratory decompensation. Forty percent have recovered bilateral chordal mobility. Conclusion: SCAPE is a cutting-edge and effective alternative to treat PCB in pediatric patients. Our study shows that it is an alternative to tracheotomy, with excellent results and lower morbidity and mortality.

A novel two-surgeon technique of simultaneous bilateral cataract surgery with complete delinking

Though technological advancements have transcended beyond expectation, phacoemulsification remains a challenge in uncooperative patients, where the procedure may be contemplated under general anesthesia, with simultaneous bilateral cataract surgery (SBCS) being the surgery of choice. In this manuscript, we have reported a novel two-surgeon technique of SBCS on a 50-year-old mentally subnormal patient. Under general anesthesia, two surgeons performed phacoemulsification simultaneously, using two separate microscopes, irrigation lines, phaco machines, instruments, and assistants. Intraocular lens (IOL) implantation was performed in both eyes (OU). The patient had a visual recovery from 5/60, N36 in OU preoperatively to 6/12, N10 in OU on post-operative day 3 and 1 month, with no complications. This technique can potentially reduce the risk of endophthalmitis, repeated and prolonged anesthesia, and the number of hospital visits. To the best of our knowledge, this two-surgeon technique of SBCS has never been reported in the literature.

Bilateral acute depigmentation of the iris determined in two cases after COVID-19 infection

Bilateral acute depigmentation of the iris (BADI) is a rare disease characterized by iris atrophy. Although it can be self-limiting, it is sometimes progressive and can lead to glaucoma and severe vision loss. Two female patients were admitted to our clinic because of a change in iris color following coronavirus disease 2019 (COVID-19) infection. After the exclusion of other etiologies in the eye examination, BADI was diagnosed in both cases. Thus, it was shown that COVID-19 may also be involved in the etiology of BADI.

Calidad visual y de vida en la cirugía refractiva bilateral simultánea del cristalino en pacientes hipermétropes / Visual quality and quality of life in simultaneous bilateral refractive lens surgery in hyperopic patients

Introducción: La cirugía actual de la catarata no comprende solo restablecer la visión en su mayor cantidad posible, sino que incluye además la psicofísica de la visión. Objetivo: Evaluar los resultados de la cantidad, calidad visual y de vida en la cirugía refractiva bilateral simultánea del cristalino en pacientes hipermétropes. Métodos: Se realizó un estudio descriptivo longitudinal prospectivo de serie de casos en 108 ojos de 54 pacientes con catarata bilateral e hipermetropía operados por cirugía bilateral simultánea en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer" desde noviembre 2018 hasta abril 2022. Se emplearon los porcentajes y los números absolutos para resumir las variables cualitativas. En el caso de las cuantitativas se usó la media con su desviación estándar (DE) y el intervalo de confianza del 95 por ciento. Resultados: Fue más frecuente el sexo femenino con una edad media de 69,1 ± 8,1 años. El 55,11 por ciento de los pacientes tuvo dureza NO3. La agudeza visual monocular mejoró en el 97,2 por ciento y el 100 por ciento la mejoró de forma bilateral. Hubo una pérdida celular endotelial de 10,19 por ciento. La visión de colores y la sensibilidad al contraste mostraron de igual manera mejoría significativa. Conclusiones: La cirugía bilateral simultánea del cristalino en pacientes hipermétropes contribuye de manera significativa a la mejoría de la visión en cantidad y calidad, por lo que permite recuperar la calidad de vida(AU)

Introduction: Current cataract surgery does not comprise only restoring vision to its greatest possible quantity, but also includes the psychophysics of vision. Objective: To evaluate the results of quantity, visual quality and quality of life in simultaneous bilateral refractive surgery of the crystalline lens in hyperopic patients. Methods: A prospective longitudinal descriptive case series prospective study was performed in 108 eyes of 54 patients with bilateral cataract and hyperopia operated by simultaneous bilateral surgery at the Cuban Institute of Ophthalmology "Ramón Pando Ferrer" from November 2018 to April 2022. Quality of life was also taken into account by the FV-14 survey. Percentages and absolute numbers were used to summarize the qualitative variables. In the case of quantitative variables, the mean with standard deviation (SD) and 95 percent confidence interval were used. Results: The female gender was more frequent with an average age of 69.1±8.1 years. 55.11 percent of patients had NO3 hardness. Monocular visual acuity improved in 97.2 percent and 100 percent improved bilaterally. There was an endothelial cell loss of 10.19 percent. Color vision and contrast sensitivity likewise showed significant improvement. Conclusions: Simultaneous bilateral lens surgery in hyperopic patients, contributes significantly to the improvement of vision in quantity and quality, thus allowing recovery of quality of life(AU)

Agujero macular idiopático bilateral simultáneo con cierre espontáneo de un lado / Simultaneous bilateral idiopathic macular hole with spontaneous one-sided closure

Introducción: El agujero macular idiopático se caracteriza como la pérdida central de la agudeza visual. La presentación bilateral se presenta con una frecuencia desde el 4,8 hasta el 30 por ciento y el cierre espontáneo para diámetros menores a 250 um es de 3,5 por ciento. Objetivo: Describir las formas de presentación y tratamientos alternativos en pacientes con agujero macular idiopático. Presentación de caso: Paciente mujer de 66 años sin antecedentes médicos que presenta un agujero macular idiopático bilateral y simultáneo. En el examen de tomografía de coherencia óptica del ojo derecho presentó 190 um y del ojo izquierdo 210 um. En el ojo izquierdo se le realizó intervención quirúrgica y en el ojo derecho presentó un cierre espontáneo con evolución favorable anatómica y funcional. Conclusiones: Los agujeros maculares idiopáticos se pueden presentar de manera bilateral. Las opciones terapéuticas y el manejo quirúrgico son algunas de las alternativas para su atención(AU)

Introduction: Idiopathic macular hole is characterized as central loss of visual acuity. Bilateral presentation occurs with a frequency from 4.8 percent to 30 percent and spontaneous closure for diameters less than 250 um is 3.5 percent. Objective: To describe the forms of presentation and alternative treatments in patients with idiopathic macular hole. Case presentation: We present a case of a 66-year-old female patient with no medical history presenting with a simultaneous bilateral idiopathic macular hole. Optical coherence tomography examination of the right eye showed 190 um and of the left eye 210 um. In the left eye she underwent surgical intervention and in the right eye she presented spontaneous closure with favorable anatomical and functional evolution. Conclusions: Idiopathic macular holes can present bilaterally and therapeutic options and surgical management are some of the alternatives for their care(AU)

Síndrome uveomeningoencefálico Vogt Koyanagi-Harada con desprendimiento de la capa bacilar de la retina / Vogt Koyanagi-Barada uveomeningoencephalic syndrome with detachment of the bacillary layer of the retina

Introducción: El síndrome de Vogt-Koyanagi-Harada pertenece a los síndromes uveomeníngeos y es una de las principales enfermedades que amenazan la visión. Se caracteriza por una uveítis bilateral que se asocia frecuentemente con manifestaciones neurológicas, auditivas y tegumentarias. Recientemente un fenotipo particular de engrosamiento macular se ha descrito como desprendimiento bacilar asociado a esta enfermedad. Objetivo: Describir el desprendimiento bacilar de la retina mediante la tomografía de coherencia óptica de dominio espectral en un caso de Vogt Koyanagi Harada en fase uveítica. Presentación de caso: Paciente femenina de 46 años de edad atendida en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer" con disminución de agudeza visual en ambos ojos y panuveitis bilateral. Fue diagnosticada con síndrome de Vogt-Koyanagi-Harada en su fase uveítica aguda con presencia de manifestaciones neurológicas y desprendimiento de la capa bacilar de la retina identificado mediante la tomografía de coherencia óptica de dominio espectral. Conclusiones: El síndrome de Vogt-Koyanagi-Harada aguda y el desprendimiento bacilar de la capa de la retina pueden diferenciarse de otros signos mediante la tomografía de coherencia óptica de dominio espectral. Su desaparición pudiera tener una relación con la mejoría de la agudeza visual(AU)

Introduction: Vogt-Koyanagi-Harada syndrome belongs to the uveomeningeal syndromes and is one of the major vision-threatening diseases. It is characterized by bilateral uveitis, which is frequently associated with neurological, auditory and integumentary manifestations. Recently a particular phenotype of macular thickening has been described as bacillary detachment associated with this disease. Objective: To describe bacillary retinal detachment using spectral domain optical coherence tomography in a case of Vogt Koyanagi Harada in uveitic phase. Case presentation: 46-year-old female patient attended at the Cuban Institute of Ophthalmology "Ramón Pando Ferrer" with decreased visual acuity in both eyes and bilateral panuveitis. She was diagnosed with Vogt-Koyanagi-Harada syndrome in its acute uveitic phase with presence of neurological manifestations and detachment of the bacillary layer of the retina identified by spectral domain optical coherence tomography. Conclusions: Acute Vogt-Koyanagi-Harada syndrome and bacillary retinal layer detachment can be differentiated from other signs using spectral-domain optical coherence tomography. Their disappearance could be related to the improvement of visual acuity(AU)

Disposición hacia la colaboración médica internacional en estudiantes de Estomatología de ocho universidades cubanas / Willingness towards international medical collaboration in dental students from eight Cuban universities

Introducción: Cuba se ha caracterizado por enviar a diversos países delegaciones de salud, llamadas "misiones médicas". Sin embargo, el interés de los futuros profesionales de formar parte de esas delegaciones no se ha investigado. Objetivos: Caracterizar la disposición hacia la colaboración médica internacional e identificar los factores asociados en estudiantes cubanos de Estomatología. Métodos: Se realizó una investigación transversal, analítica de datos secundarios, en estudiantes de todos los años del curso académico 2018-2019, pertenecientes a ocho universidades. La variable dependiente fue el reporte de la disposición de ir a misiones médicas. Se calcularon las razones de prevalencia e intervalos de confianza al 95 por ciento. Resultados: Participaron 1174 estudiantes, de los cuales 830 (71 por ciento) estuvieron dispuestos a cumplir misiones médicas. Existió una mayor disposición hacia la colaboración médica conforme aumentaba la edad (RPa: 1,02; IC 95 por ciento: 1,00-1,04; p = 0,044); así como, en los estudiantes que reportaron presión familiar para estudiar la carrera (RPa: 1,17; IC 95 por ciento: 1,09-1,26; p < 0,001). Aquellos que reportaron buenas notas antes de ingresar a la universidad (RPa: 0,83; IC 95 por ciento: 0,77-0,91; p < 0,001), los de solvencia económica (RPa: 0,90; IC 95 por ciento: 0,90-0,98; p = 0,019) y los que estaban cursando el tercer y cuarto años académicos (RPa: 0,93; IC 95 por ciento: 0,88-0,97; p = 0,003) fueron los de menor disposición para colaborar; ajustado por el sexo y la universidad. Conclusión: Existe una elevada disposición hacia la colaboración médica internacional y está asociada a múltiples aspectos sociales y educativos(AU)

Introduction: Cuba has been characterized by sending health delegations to various countries, called "medical missions". However, the interest of future professionals in joining those delegations has not been investigated. Objectives: Characterize the disposition towards international medical collaboration and identify the associated factors in Cuban students of Stomatology. Methods: A cross-sectional research and secondary data analytics was carried out in students of all years of the academic year 2018-2019, belonging to eight universities. The dependent variable was the report of the willingness to go on medical missions. Prevalence ratios and 95 percent confidence intervals were calculated. Results: 1174 students participated, of which 830 (71 percent) were willing to fulfill medical missions. There was a greater willingness towards medical collaboration as age increased (RPa: 1.02; 95 percent CI 1.00-1.04; p = 0.044); as well as, in students who reported family pressure to study the career (RPa: 1.17; 95 percent CI 1.09-1.26; p < 0.001). Those who reported good grades before entering college (RPa: 0.83; 95 percent CI 0.77-0.91; p < 0.001), those of economic solvency (RPa: 0.90; 95 percent CI 0.90-0.98; p = 0.019) and those who were in the third and fourth academic years (RPa: 0.93; 95 percent CI 0.88-0.97; p = 0.003) were those with the least willingness to collaborate; adjusted by sex and college. Conclusion: There is a high disposition towards international medical collaboration and it is associated with multiple social and educational aspects(AU)

Manejo quirúrgico de bad split bilateral en cirugía ortognática

El bad split es un término clínico que refiere a una fractura no planificada que ocurre al momento de realizar una osteotomía sagital de rama mandibular (OSRM). Afecta aproximadamente al 2,3% de los pacientes y se han descrito factores de riesgo tales como la presencia de terceros molares mandibulares, edad avanzada al momento de la cirugía, técnica de osteotomía inadecuada, entre otros. Se recomienda efectuar manio-bras preventivas para evitar la aparición de patrones de fractura no deseados al realizar la OSRM. Sin embargo, al momento de pesquisar un bad split, éste debe ser tratado por un equipo capacitado y de manera oportuna para evitar retardo en la consolidación, infecciones y secuestros óseos que puedan comprometer los resultados de la cirugía. En este artículo se presenta el manejo de un caso clínico de bad split bilateral intraoperatorio por el Servicio de Cirugía Maxilofacial del Hospital San José, enfatizando su tratamiento quirúrgico.

Bad Split is a clinical term referring to an unplanned fracture that occurs during the bilateral sagittal split osteotomy (BSSO). It affects approximately 2,3% of the patients undergoing orthognathic surgery and several risk factors have been described such as the presence of mandibular third molars, advanced age at the moment of orthognathic surgery, inadequate osteotomy technique, etc. Preventive maneuvers are recommended in order to avoid the appearance of undesired fracture patterns during BSSO. However, if a bad split is detected it must be managed and treated by a qualified team to avoid further complications such as delayed bone consolidation, bone infection and necrosis. In this article we present the management of a case of bilateral bad split by the Maxillofacial Surgery Service of Hospital San José, emphasizing on its surgical treatment.

Safety and clinical outcomes of thoracoscopic segmentectomy in bilateral lung cancer: A single-center retrospective study / 中国胸心血管外科临床杂志

@#Objective     To assess the safety and clinical outcomes of segmentectomy in one- or two-staged video-assisted thoracoscopic surgery (VATS) for bilateral lung cancer. Methods    We retrospectively enrolled 100 patients who underwent VATS segmentectomy for bilateral lung cancer at the Department of Thoracic Surgery of Peking Union Medical College Hospital from December 2013 to May 2022. We divided the patients into two groups: a one-stage group (52 patients), including 17 males and 35 females with a mean age of 55.17±11.09 years, and a two-stage group (48 patients), including 16 males and 32 females with a mean age of 59.88±11.48 years. We analyzed multiple intraoperative variables and postoperative outcomes. Results     All 100 patients successfully completed bilateral VATS, and at least unilateral lung received anatomical segmentectomy. Patients in the one-stage group were younger (P=0.040), had lower rate of comorbidities (P=0.030), were less likely to have a family history of lung cancer (P=0.018), and had a shorter interval between diagnosis and surgery (P=0.000) compared with patients in the two-stage group. Wedge resection on the opposite side was more common in the one-stage group (P=0.000), while lobectomy was more common in the two-stage   group. The time to emerge from anesthesia in the one-stage group was longer than that in the first and second operations of the two-stage group (P=0.000, P=0.002). Duration of surgery and anesthesia were similar between two groups (P>0.05). Total number of lymph node stations for sampling and dissection (P=0.041) and lymph nodes involved (P=0.026) were less in the one-stage group. Intraoperative airway management was similar between two groups (P>0.05). The one-stage group was associated with lower activities of daily living (ADL) scores. Conclusion     Segmentectomy is safe in one- or two-staged VATS for bilateral lung cancer, including contralateral sublobectomy and lobectomy. Duration of surgery and perioperative complications are similar between two groups, but the one-stage group is associated with lower ADL scores. On the basis of comprehensive consideration in psychological factors, physical conditions and personal wishes of patients, one-staged sequential bilateral VATS can be the first choice.

Direct-to-implant breast reconstruction after bilateral mastectomy: A comparison between endoscopic and conventional open surgery / 中国胸心血管外科临床杂志

@#Objective    To compare the differences of clinical effects between the bilateral endoscopic breast reconstruction and the open breast reconstruction. Methods    The clinical data of 28 female patients who underwent bilateral breast graft reconstruction in the Department of Breast Surgery of West China Hospital from January 2017 to January 2021 were analyzed retrospectively. The patients were divided into two groups: an endoscopic group (n=12, aged 41.3±8.9 years) and an open group (n=16, aged 41.6±8.8 years). The clinical data of the two groups of patients were compared. Results     There was no significant difference in demographic and oncological data between the two groups (P>0.05). There was a significant difference in the implants between the two groups (P=0.008). The operation time (298.2±108.6 min vs. 326.5±95.8 min, P=0.480) and anesthesia time (373.4±91.2 min vs. 400.3±97.1 min, P=0.463) were not significantly different. The total complications (P=0.035) and major complications (P=0.024) in the open group were more than those in the endoscopic group. For the comparison of breast satisfaction, psychosocial well-being and sexual well-being, the scores at six months and one year after surgery were higher in the endoscopic group than those in the open group (P<0.05). Conclusion    The endoscopic reconstruction is safe and effective, with high satisfaction rates regarding  breast reconstruction and quality of life, and is superior to conventional open surgery.

Feasibility and safety of one-stage bilateral video-assisted thoracic surgery for resection of bilateral multiple pulmonary nodules / 南方医科大学学报

OBJECTIVE@#To evaluate the feasibility and safety of one- stage bilateral video-assisted thoracic surgery (VATS) for resection of bilateral multiple pulmonary nodules (BMPNs).@*METHODS@#We analyzed the clinical characteristics, pathological features, perioperative outcomes and follow-up data of 41 patients with BMPNs undergoing one-stage bilateral VATS from July, 2011 to August, 2021.@*RESULTS@#One-stage bilateral VATS was performed uneventfully in 40 of the patients, and conversion to open surgery occurred in 1 case. The surgical approaches included bilateral lobectomy (4.9%), lobar-sublobar resection (36.6%) and sublobar-sublobar resection (58.5%) with a mean operative time of 196.3±54.5 min, a mean blood loss of 224.6±139.5 mL, a mean thoracic drainage duration of 4.7±1.1 days and a mean hospital stay of 14±3.8 days. Pathological examination revealed bilateral primary lung cancer in 15 cases, unilateral primary lung cancer in 21 cases and bilateral benign lesions in 5 cases. A total of 112 pulmonary nodules were resected, including 67 malignant and 45 benign lesions. Postoperative complications included pulmonary infection (5 cases), respiratory failure (2 cases), asthma attack (2 cases), atrial fibrillation (2 cases), and drug-induced liver injury (1 case). No perioperative death occurred in these patients, who had a 1-year survival rate of 97.6%.@*CONCLUSION@#With appropriate preoperative screening and perioperative management, one-stage bilateral VATS is feasible and safe for resection of BMPNs.

Two cases of bilateral reverse shoulder arthroplasty performed in patients with rheumatoid arthritis / Journal of Rural Medicine

Bilateral shoulder joint disorders caused by rheumatoid arthritis significantly impair daily functioning owing to a lack of contralateral compensation. In Japan, reverse shoulder joint prostheses were approved in 2014. This was expected to improve the surgical outcomes of rheumatoid shoulder arthroplasty. We report two patients with rheumatoid arthritis who underwent bilateral reverse shoulder arthroplasty. This study aims to evaluate their postoperative clinical outcomes and activities of daily living. The patients were women in their 70s with stage III class 2 rheumatoid arthritis. Their treatment and postoperative activities of daily living were retrospectively reviewed. The first patient underwent the inlay type and experienced a residual limitation of external rotation postoperatively; therefore, she was restricted to dress with front-open clothes. However, she was able to undress after the lining of the garment was changed to a slippery material. The second patient underwent the onlay type and showed almost no limitations in postoperative activities of daily living. She was able to undress with an external rotation of 40–50°. Bilateral reverse shoulder arthroplasty improved range of motion, the Japanese Orthopaedic Association shoulder score, and functional outcomes. Only a few difficulties were encountered in the activities of daily living.

Comparison of Clinicopathological Characteristics Between Primary and Contralateral Cancers in BRCA1/2 Carriers with Metachronous Bilateral Breast Cancers / 肿瘤防治研究

Objective To compare the clinicopathological characteristics between primary and contralateral cancers in patients with metachronous bilateral breast cancer (MBBC) who carried a BRCA1/2 germline pathogenic variant. Methods A total of 496 BRCA1/2 carriers with primary unilateral breast cancer were included (196 with BRCA1 and 300 with BRCA2). Clinicopathological information of patients was collected, and the median follow-up for the entire cohort was 10.4 years (0.4-20.8 years). Results Among all patients, 31 (15.8%) of the 196 BRCA1 carriers and 49 (16.3%) of the 300 BRCA2 carriers had MBBC, respectively. Among the 31 BRCA1 carriers who developed MBBC, the proportion of triple-negative breast cancer (TNBC) in primary cancer and contralateral cancer was 61.3% and 67.7%, respectively. If the primary cancer of BRCA1-mutated MBBC was TNBC, the probability of the contralateral breast cancer with TNBC was 89.5% (17/19), which was significantly higher than that if the primary cancer was non-TNBC (33.3%, 4/12) (P=0.004). Among the 49 BRCA2 carriers who developed MBBC, the predominant molecular phenotype of the primary and contralateral cancers was HR+ & HER2- (77.6% and 67.3%, respectively; P=0.53). Conclusion Approximately 60% of BRCA1 carriers exhibit TNBC. If a BRCA1 carrier with a TNBC primary breast cancer had an MBBC, the probability of the contralateral breast cancer being TNBC phenotype is almost 89.5%.

Risk Factors Analysis and Prevention Strategy of Renke Space Edema Complicated with Vocal Cord Adhesion After CO2 Laser Resection / 中山大学学报(医学科学版)

ObjectiveTo investigate the prevention strategy of bilateral vocal cord adhesion after simultaneous Renke space edema resection under CO2 laser. MethodsSeventy patients who underwent CO2 laser resection of bilateral Renke space edema of vocal cords from June 2018 to June 2021 in our hospital were retrospectively selected for this study. According to their postoperative vocal cord adhesion， patients were divided into vocal cord adhesion group （35 cases） and silent band adhesion group （35 cases）， and the general data of the two groups were compared. Multivariate logistic regression analysis was used to evaluate the risk factors for postoperative vocal cord adhesion. The prediction model of postoperative morbidity risk of vocal cord adhesion was established by using chisquared automatic interaction detection （CHAID） classification tree algorithm， and the application value of the model was evaluated by benefit graph and index graph. ResultsMultivariate analysis showed that surgical range and depth of Ⅱ， laser power≥5 W and anterior connection involvement were the risk factors for postoperative vocal cord adhesion ［OR 95%CI： 6.113 （2.346， 17.451）； 5.214 （1.469， 15.263）； 18.651 （1.689， 36.203）］. The classification tree model showed that anterior articulation involvement was an important predictor of postoperative vocal cord adhesion （76.92%； χ2=11.993， P=0.001）， and the benefit graph and index graph showed good models. ConclusionClinical attention should be paid to surgical scope and depth， laser power and anterior union involvement， and timely prevention strategies should be formulated to reduce the risk of vocal cord adhesion in patients.