The modified Valsalva maneuver in hypopharynx CT scan / 临床耳鼻咽喉头颈外科杂志

Objective:To analyze the significance and factors influencing of CT scan under the modified Valsalva maneuver. Methods:Clinical data of 52 patients with hypopharyngeal carcinoma diagnosed from August 2021 to December 2022 were collected, all patients had calm breathing CT scan and modified Valsalva maneuver CT scan. Compare the exposure effect of the aryepiglottic fold, interarytenoid fold, postcricoid area, piriform fossa apex, posterior hypopharyngeal wall, and glottis with each CT scanning method. The effects of age, neck circumference, neck length, BMI, tumor site, and T stage on the exposure effect were analyzed. Results:In 52 patients, 50 patients（96.15%） completed CT scan at once time. The exposure effect of the CT scan under modified Valsalva maneuver in the aryepiglottic fold, interarytenoid fold, postcricoid area, piriform fossa apex, posterior hypopharyngeal wall was significantly better than CT scan under calm breathing（Z=-4.002, -8.026, -8.349, -7.781, -8.608, all P<0.01）, while CT scan under modified Valsalva maneuver was significantly worse in glottis than CT scan under calm breathing（Z=-3.625, P<0.01）. In the modified Valsalva CT scan, age had no obvious effect on the exposure effect. The exposure effect was better with long neck length, smaller neck circumference, smaller BMI and smaller T stage. The exposure of postcricoid carcinoma was better than pyriform sinus carcinoma and posterior hypopharyngeal wall carcinoma. But differences were not all statistically significant. Conclusion:The anatomical structure of the hypopharynx was clearly under CT scan with modified Valsalva maneuver, which clinical application is simple, but the effect of glottis was worse. The influence of age, neck circumference, neck length, BMI, and tumor T stage on the exposure effect still needs further investigation.

Caso Clínico: Cuerpo Extraño Afilado Impactado en Hipofaringe de Difícil Extracción / Clinical Case Report: Sharp Foreign Body of Difficult Extraction Located in Hypopharynx

INTRODUCCIÓN: Los cuerpos extraños alojados en faringe representan problemas clínicos urgentes, que afectan sobre todo a la población pediátrica y de adultos mayores. Solo el 10-20% de casos son complejos y requieren intervenciones no quirúrgicas (endoscopía) y menos del 1% necesitan cirugía. La mayoría de cuerpos son de origen alimenticio y varían entre las diferentes regiones y culturas. Debido a la situación anatómica de la hipofaringe y su cercanía a la laringe y al esfínter cricofaríngeo, la extracción de objetos tiene una alta tasa de éxito mediante endoscopía flexible. Sin embargo, cuando el tratamiento de primera elección falla, los laringofaringoscopios curvados de tipo rígido pueden ser utilizados por su capacidad de mostrar ampliamente la hipofaringe mientras se previene el daño mucoso o perforación faríngea. CASO CLÍNICO: Paciente femenino de 57 años, acudió a emergencias por moderada odinofagia, disfagia a sólidos y sensación de cuerpo extraño intraluminal en cuello, secundarios a ingesta accidental de espina de pescado. La paciente no indicaba tos ni dificultad respiratoria. Se realizó tomografía computarizada de cuello sin contraste que evidenció objeto hiperdenso de 31 mm de largo x 2 mm de ancho, ubicado en forma oblicua en hipofaringe. EVOLUCIÓN: A las 38 horas de hospitalización, se decidió realizar una endoscopia digestiva alta, que extrajo fragmentos pequeños, fallando su extracción total. Se decidió posteriormente el uso de un larngofaringoscopio curvo rígido, para movilizar y extraer el cuerpo extraño de manera atraumática. CONCLUSIÓN: A las 38 horas de hospitalización, se decidió realizar una endoscopia digestiva alta, que extrajo fragmentos pequeños, fallando su extracción total. Se decidió posteriormente el uso de un laringofaringoscopio curvo rígido, para movilizar y extraer el cuerpo extraño de manera atraumática.

BACKGROUND: Foreign bodies located in the pharynx are considered medical urgencies, affecting mainly pediatric population and older adults. Only 10 - 20% of cases are complex and require nonsurgical interventions (endoscopy) and less than 1% need surgery; the majority of foreign bodies are food derivatives. Due to the anatomical situation of the hypopharynx and its proximity to the larynx and the cricopharyngeal sphincter, the extraction of foreign bodies through flexible endoscopy has a high success rate. However, when the first-choice treatment fails, rigid-type curved laryngopharyngoscopy can be used because of its capacity to widely show the hypopharynx while preventing mucosal damage or pharyngeal perforation. CASE REPORT: 57-year-old female patient, who complained of moderate odynophagia, dysphagia to solids and intraluminal foreign body sensation in the neck, secondary to accidental ingestion of a fishbone. The patient denied cough or respiratory distress. Computed tomography of the neck without contrast was performed, which showed an hyperdense object that measured: 31 mm long x 2 mm wide, located obliquely in the hypopharynx. EVOLUTION: Within 38 hours of hospitalization, upper gastrointestinal endoscopy was performed, taking out small fragments, without complete extraction. A rigid curve laryngopharyngoscopy was performed with the extraction of the foreign body without producing any damage. CONCLUSION: Foreign bodies impacted in the hypopharynx need an evaluation and individualized clinical management. The use of the rigid curved laryngopharyngoscope is recommended as an alternative in case of objects that couldn't be extracted by endoscopy and when surgery cannot be performed.

Two-dimensional and three-dimensional assessment of the upper airway / Evaluación bidimensional y tridimensional de la vía aérea superior

The aim of this study was to validate and correlate the two-dimensional (2D) with the three-dimensional (3D) measures of the upper airway assessment. Lateral cephalograms and cone beam CT of 100 adult subjects were used to perform a 2D and 3D assessment of the upper airway. Spearman correlation coefficient was used to determine whether there was correlation between variables. Additionally, specificity, sensitivity, negative predictive value and positive predictive value was calculated for the 2D assessment of the upper airway. Correlation between all two and three dimensional variables was found. In the nasopharynx and oropharynx, a weak correlation (r <0.51) was found; in the oropharynx a moderate one (0.50

El objetivo de este estudio fue validar y correlacionar las medidas bidimensionales (2D) con las medidas tridimensionales (3D) de la evaluación de las vías aéreas superiores. Se realizaron cefalogramas laterales y cone beam CT en 100 sujetos adultos para realizar una evaluación 2D y 3D de la vía aérea superior. Se utilizó el coeficiente de correlación de Spearman para determinar si había correlación entre las variables. Además, para la evaluación 2D de la vía aérea superior, se calculó la especificidad, sensibilidad, valor predictivo negativo y valor predictivo positivo. Se encontró correlación en todas las variables entre dos y tres dimensiones. En la nasofaringe y la orofaringe, se encontró una correlación débil (r <0,51) mientras que en la orofaringe moderada (0,50

Pharyngeal airway space in subjects with class II and class III facial deformities / Espacio de la vía aérea faríngea en sujetos con deformidad facial clase II y clase III

Facial deformities are related to morphological differences and the mandible position shows differences in maxillomandible relation. The aim of this research was to compare the pharyngeal airway space (PAS) in subjects with class II and class III facial deformities We included 28 adult subjects with skeletal characteristics associated to class II or class III according to the SNA angle and dental overjet; subjects with facial asymmetry and other facial deformities and subjects with facial trauma or facial surgery history were excluded. Cone beam computed tomography was realized (CBCT) to asses the nasopharynx, oropharynx, hypopharynx, as well as the distance measured between the mandible genial spine and hyoid bone; data analysis were realized by descriptive analysis and statistical analysis using t test with 0.05 to show statistical differences. Class II subjects presented minor values in all of the measurements; in the oropharynx and the hypopharynx we observed the most important differences, with nasopharynx showing statistically significant differences (p<0.05). In conclusion class II subjects presented a minor pharyngeal airway space and it is suggested that this information should be used in the diagnosis process and prior to surgical treatment.

Las deformidades faciales son asociadas a diferencias en la posición mandibular evidenciando diferencias en la relación maxilomandibular. El objetivo de esta investigación fue comparar el espacio aéreo faríngeo en sujetos con deformidad facial clase II y clase III. Se incluyeron 28 sujetos con características esqueletales asociadas a clase II o clase III seguidos de la evaluación del angulo SNA y el resalte dentario; se excluyeron los sujetos con asimetría facial y otras deformidades faciales y sujetos con historia de trauma facial o historia de cirugía facial; se realizó la tomografía computadorizada cone beam para evaluar el área de nasofaringe, orofaringe, hipofaringe y la distancia entre la espina geni mandibular y el hueso hioides; los datos se analizaron con estadística descriptiva y la prueba t usando un valor de 0,05 para establecer significancia estadística. Se observó que los sujetos de clase II presentaron valores menores a los sujetos clase III en todas las mediciones realizadas; en el área de orofaringe e hipofaringe se observaron las diferencias mas importantes, estadísticamente significativas (p<0,05). Se puede concluir que los sujetos con deformidad facial clase II presentan un espacio de vía aérea faríngea más estrecho y se sugiere que este temática sea resuelta en la etapa de diagnóstico previo a la selección de tratamientos quirúrgicos o no quirúrgicos.

Occult penetrating foreign body in hypopharynx

An unusual presentation of a foreign body in the hypopharynx is reported. A high index of clinical suspicion along with radiological assessment is helpful in the diagnosis of foreign bodies in the aero-digestive tract