Atresia de coana unilateral: reporte de un caso pediátrico / Unilateral coana atresia. A pediatric case report

La atresia de coanas se caracteriza por la obliteración de la abertura nasal posterior. Es la anomalía congénita más frecuente de las fosas nasales. Tiene una incidencia de 1 cada 5000 a 7000 neonatos, con predominio en el sexo femenino. Puede presentarse en forma aislada o asociada a otros síndromes como el CHARGE (coloboma [C], malformaciones cardíacas [H], atresia de coanas [A], retraso psicomotor y/o en el crecimiento [R], hipoplasia de genitales [G], malformaciones auriculares y/o sordera [E, por su sigla en inglés]). Las manifestaciones clínicas son la obstrucción nasal, cianosis y dificultad respiratoria desde el nacimiento cuando es bilateral. Las atresias unilaterales se caracterizan por insuficiencia ventilatoria nasal y rinorrea unilateral, y pueden pasar inadvertidas. El diagnóstico se realiza mediante endoscopia y estudios por imágenes. El tratamiento es quirúrgico; existen diferentes técnicas y vías de abordaje. Se presenta el caso de un paciente masculino de 7 años con atresia unilateral de coana derecha con resolución microendoscópica, colocación de tutor externo, con buena resolución.

Choanal atresia is characterized by obliteration of the posterior nasal opening. It is the most common congenital anomaly of the nasal passages. It has an incidence of 1 in 5000 to 7000 newborns; predominantly female. It can occur in isolation or in association with other syndromes such as CHARGE (coloboma [C], cardiac malformations [H], choanal atresia [A], psychomotor and/or growth retardation [R], genital hypoplasia [G], atrial malformations and/or deafness [E]. Clinicallypresents nasal obstruction, cyanosis and respiratory distress from birth when bilateral, unilateral atresias are characterized by nasal ventilatory insufficiency and unilateral rhinorrhea, which may go unnoticed. Diagnosis is made by endoscopy and imaging tests. Treatment is surgical, with different techniques and approaches.A 7-year-old male patient is presented with unilateral atresia of the right choana with microendoscopic resolution, placement of an external tutor, with good resolution.

Anomalías congénitas nasales: Estudio retrospectivo y revisión de la literatura / Congenital Anomalies of the Nose: retrospective study and literature review

INTRODUCTION. Congenital malformations occur in 1 in 5,000 to 40,000 live births. They present as a morphological abnormality of the nasal pyramid or as a picture of moderate to severe nasal obstruction. OBJECTIVE. Evaluate the etiology, associated comorbidities, management and mortality of congenital malformations of the nose in neonates and infants. MATERIALS AND METHODS. Cross-sectional retrospective descriptive study, 105 medical records were reviewed, of which 26 corresponded to patients with congenital nasal malformations, at the Carlos Andrade Marín Specialty Hospital in Quito - Ecuador, between January 2009 and May 2022; the tabulation and analysis of data was carried out in the Excel program. The patients were classified according to Losee et al. in 4 types: hypoplasia, hyperplasia, clefts and tumors RESULTS. Nasal anomalies occurred in males in 73.07%, all presented nasal obstruction, the diagnosis was made by flexible nasofibroscopy; in 42.3% of the cases, the evaluation was complemented with computed tomography. The most frequent congenital pathology was stenosis - choanal atresia with 53.8%, followed by craniofacial clefts with 15.39%. In 42.3% of the cases there was an association with genetic syndromes, neurological, ocular and intestinal pathology. 69.23% of the patients received clinical treatment with nasal lavages, nasal corticosteroids and positive pressure by cannula, while 30.77% were resolved surgically, being: 2 unilateral choanal atresia, 1 middle fossa stenosis, 4 cleft lip and palate and 1 encephalocele. Mortality was 7.69% CONCLUSION. Hypoplasias and clefts are the predominant pathologies, flexible nasal nasofibroscopy is the diagnostic test of choice. The clinical treatment was successful in the initial management in 69.23% of cases. Surgery was performed for the repair of facial clefts; being the hypoplasias or masses managed by endoscopic approach.

INTRODUCCIÓN. Las malformaciones congénitas se presentan en 1 de cada 5.000 a 40.000 nacidos vivos. Se presentan como una anomalía morfológica de la pirámide nasal o como un cuadro de obstrucción nasal moderada a severo. OBJETIVO. Evaluar la etiología, comorbilidades asociadas, manejo y mortalidad de las malformaciones congénitas de nariz en neonatos y lactantes. MATERIALES Y MÉTODOS. Estudio descriptivo retrospectivo transversal, se revisaron 105 historias clínicas de las cuales 26 correspondieron a pacientes con malformaciones congénitas nasales, en el Hospital de Especialidades Carlos Andrade Marín de Quito - Ecuador, entre enero de 2009 a mayo de 2022; la tabulación y análisis de datos se realizó en el programa Excel. Los pacientes fueron clasificados según Losee et al. en 4 tipos: hipoplasia, hiperplasia, hendiduras y tumores. RESULTADOS. Las anomalías nasales se presentaron en el sexo masculino en el 73.07%, el motivo de consulta fue la obstrucción nasal, el diagnóstico se realizó mediante nasofibroscopía flexible; en el 42,3% de los casos se complementó la evaluación con tomografía computarizada. La patología congénita más frecuente fue la estenosis - atresia de coana con un 53,8%, seguida de hendiduras craneofaciales con un 15.39%. En el 42.3% de los casos existió asociación con síndromes genéticos, patología neurológica, ocular e intestinal. El 69,23% de los pacientes recibió tratamiento clínico con lavados nasales, corticoides por vía nasal y presión positiva por cánula, mientras que el 30,77% se resolvió quirúrgicamente, siendo: 2 atresia unilateral de coana, 1 estenosis de fosa media, 4 hendiduras labio palatinas y 1 encefalocele. La mortalidad fue del 7,69%. CONCLUSIÓN: Las hipoplasias y las hendiduras son las patologías que predominaron, la nasofibroscopia flexible nasal es el examen diagnóstico de elección. El tratamiento clínico fue exitoso en el manejo inicial en el 69,23% de casos. La cirugía se realizó para la reparación de hendiduras faciales; siendo las hipoplasias o masas manejadas por abordaje endoscópico.

Atresia de coana bilateral en adulto con malformación craneofacial asociada: un diagnóstico poco habitual / Bilateral choanal atresia in adult with associated craneofacial malformation: an unusual diagnosis

La atresia de coana es una rara malformación congénita improbable de encontrar de forma bilateral en un adolescente o adulto. Hasta la fecha, no se ha descrito ningún caso de atresia bilateral en un adulto con una malformación asociada de cabeza y cuello que haya requerido tratamiento conjunto. El tratamiento de elección de la atresia de coana bilateral continúa siendo la cirugía endoscópica, con controversia en el uso intraoperatorio de mitomicina o la colocación de stents para evitar estenosis. Lo que no está claro es el orden de tratamiento y la simultaneidad del procedimiento si se asocian otras posibles patologías que tengan una indicación quirúrgica. Presentamos un caso clínico que cumple con todos estos requisitos.

Choanal atresia is a rare congenital malformation that is unlikely to be found bilaterally and is seldom diagnosed in adulthood. To date, no clinical case of bilateral atresia has been described with a head and neck malformation that requires surgical treatment in an adult. The preferred treatment is still endoscopic sinonasal surgery with discrepancies of the use or not of intraoperative topical mitomycin or the placement of stents to avoid restenosis. What is not clear is the order of treatment and simultaneity of the procedure with other possible associated pathologies that have a surgical indication. We present a clinical case that meets all these requirements.

Atresia congénita bilateral de coanas en una adolescente: reporte de un caso / Congenital bilateral choanal atresia in an adolescelent: a case report

La atresia congénita de coanas se caracteriza por la presencia de placas que obliteran la comunicación entre la cavidad nasal y la nasofaringe desde el nacimiento. Se considera como incompatible con la vida cuando la condición es bilateral. El siguiente es el caso de una paciente femenina, de 17 años, sin síndromes asociados, con obstrucción y descarga nasal anterior bilateral, asociado a respiración oral desde el periodo neonatal. El diagnóstico de atresia bilateral de coanas fue confirmado por medio de endoscopía nasal y tomografía computarizada (TC). La imagen confirmó la presencia de placas atrésicas de composición mixta. La paciente recibió tratamiento quirúrgicamente por vía transnasal con resección de las placas y modelado de neocoana.

Congenital choanal atresia is characterized by the presence of plates obliterating the communication between the nasal cavity and the nasopharynx from birth. If bilateral, this condition is incompatible with life. This following is the case of a 17-year-old female patient, without associated syndromes, with bilateral nasal obstruction and anterior discharge, associated to oral breathing, starting in her neonatal period. The diagnosis of bilateral choanal atresia was confirmed by nasal endoscopy and computed tomography (CT) scan, due to the presence of atretic plates of mixed composition. The patient was surgically treated with plate resection and modeling of a neochoana by means of a transnasal surgical approach.

Estenosis de la apertura piriforme y síndrome de incisivo central único: casos clínicos / Piriform aperture stenosis and solitary median maxillary central incisor: clinical cases

El síndrome incisivo central único es un trastorno que involucra anomalías de la línea media. Se puede presentar con dificultad respiratoria poniendo en peligro la vida del recién nacido, debido a malformaciones nasales. Estas malformaciones incluyen atresia de coanas y la estenosis de la apertura del orificio piriforme. Debe pensarse en esta última en todo recién nacido con estridor y dificultad respiratoria de grado variable, asociado a la dificultad de pasar una sonda a través de la región anterior de las fosas nasales. El diagnóstico se confirma por tomografía computarizada del macizo craneofacial y el examen nasofibroscópico. La conducta terapéutica dependerá de la gravedad de los síntomas, pero en general si es que no hay compromiso respiratorio severo, se prefiere una conducta expectante, y esperar el crecimiento craneofacial del niño, para aumentar permeabilidad nasal. Presentamos dos casos clínicos.

Solitary median maxillary central incisor syndrome is a rare disorder involving midline abnormalities. It may present with life threatening respiratory distress in the neonate secondary to nasal malformations. These include choanal atresia and pyriform aperture stenosis. The last to be thought in any newborn with stridor and respiratory distress associated with the difficulty of passing a tube through the anterior region of the nostrils. The diagnosis is confirmed by craniofacial CT scan and nasolaryngoscope evaluation. The therapeutic approach depends on the severity of symptoms.

Surgical treatment of choanal atresia with transnasal endoscopic approach with stentless single side-hinged flap technique: 5 year retrospective analysis / Tratamento cirúrgico de atresia de coana com abordagem endoscópica transnasalcom técnica de retalho único e articulação lateral sem colocação de stent: análise retrospectiva de 5 anos

Abstract Introduction: Choanal atresia is a rare congenital malformation of the nasal cavity characterized by the complete obliteration of the posterior choanae. In 67% of cases choanal atresia is unilateral, affecting mainly (71%) the right nasal cavity. In contrast to the unilateral form, bilateral choanal atresia is a life-threatening condition often associated with respiratory distress with feeding and intermittent cyanosis exacerbated by crying. Surgical treatment remains the only therapeutic option. Objective: To report our experience in the use of a transnasal endoscopic approach with stentless single side-hinged flap technique for the surgical management of choanal atresia. Methods: A 5 year retrospective analysis of surgical outcomes of 18 patients treated for choanal atresia with a transnasal technique employing a single side-hinged flap without stent placement. All subjects were assessed preoperatively with a nasal endoscopy and a Maxillofacial computed tomography scan. Results: Ten males and eight females with a mean age at the time of surgery of 20.05 ± 11.32 years, underwent surgery for choanal atresia. Fifteen subjects (83.33%) had a bony while 3 (26.77%) a mixed bony-membranous atretic plate. Two and sixteen cases suffered from bilateral and unilateral choanal atresia respectively. No intra- and/or early postoperative complications were observed. Between 2 and 3 months after surgery two cases (11.11%) of partial restenosis were found. Only one of these presented a relapse of the nasal obstruction and was subsequently successfully repaired with a second endoscopic procedure. Conclusion: The surgical technique described follows the basic requirements of corrective surgery and allows good visualization, evaluation and treatment of the atretic plate and the posterior third of the septum, in order to create the new choanal opening. We believe that the use of a stent is not necessary, as recommended in case of other surgical techniques involving the use of more mucosal flaps.

Resumo Introdução: A atresia de coanas é uma malformação congênita rara da cavidade nasal caracterizada pela obliteração completa da coana posterior. Em 67% dos casos a atresia coanal é unilateral, acomete principalmente (71%) a cavidade nasal direita. Diferentemente da forma unilateral, a atresia coanal bilateral é uma condição com risco de vida, frequentemente associada a insuficiência respiratória à alimentação e cianose intermitente exacerbada pelo choro. O tratamento cirúrgico ainda é a única opção terapêutica. Objetivo: Relatar a nossa experiência no uso de uma abordagem endoscópica transnasal com a técnica de retalho articulado de um lado só sem colocação de stent para o tratamento cirúrgico da atresia coanal. Método: Análise retrospectiva de 5 anos dos desfechos cirúrgicos de 18 pacientes tratados para atresia coanal com uma técnica transnasal com um único retalho de articulação lateral, sem colocação de stent. Todos os indivíduos foram avaliados no pré-operatório com endoscopia nasal e um exame de tomografia computadorizada maxilofacial. Resultados: Dez homens e oito mulheres com idade média de 20,05 ± 11,32 anos à cirurgia foram submetidos a cirurgia para atresia de coanas. Quinze (83,33%) apresentavam placa atrésica óssea e três (26,77%) placa atrésica ósseo-membranosa mista. Dois e 16 casos tinham atresia coanal bilateral e unilateral, respectivamente. Não foram observadas complicações intra e/ou pós-operatórias precoces. Entre 2 e 3 meses após a cirurgia dois casos (11,11%) de restenose parcial foram identificados. Apenas um deles apresentou uma recidiva da obstrução nasal e, portanto, foi reparado com sucesso com um segundo procedimento endoscópico. Conclusão: A técnica cirúrgica descrita segue os requisitos básicos de cirurgia corretiva e possibilita boa visualização, avaliação e tratamento da placa atrésica e do terço posterior do septo, a fim de criar a nova abertura coanal. Pensamos que o uso de um stent não é necessário, tal como recomendado no caso de outras técnicas cirúrgicas que envolvem o uso de mais retalhos de mucosas.

Atresia bilateral de coanas en la adolescencia / Bilateral choanal atresia in adolescence / Atresia bilateral de choana na adolescência

Introducción: la atresia de coanas es una anomalía congénita nasal con una incidencia de 1/70.000 nacidos vivos en Argentina. Se presenta con dificultad respiratoria desde el nacimiento en el caso de las bilaterales. Presentaremos 2 casos de pacientes masculinos con atresia de coanas bilateral diagnosticados tardíamente. Para su tratamiento se utilizó técnica endoscópica transeptal con colgajos doblados sin tutores y azitromicina como antiinflamatorio de mucosa respiratoria en el postquirúrgico. Material y método: Se valoraron en forma descriptiva y retrospectiva 2 pacientes adolescentes diagnosticados e intervenidos quirúrgicamente en el Servicio de Otorrinolaringología del Hospital Posadas, mediante técnica endoscópica transeptal con colgajos doblados sin tutores. Se analizaron variables como tipo de placa atrésica, edad de diagnóstico, malformaciones asociadas y resultados quirúrgicos. Como tratamiento médico postquirúrgico, se utilizó azitromicina a dosis antiinflamatorias. Resultados: La técnica endoscópica transnasal con colgajos doblados sin tutor que hemos realizado en estos dos pacientes reduce el riesgo de reestenosis, no requiere reintervenciones posteriores para retirar el stent y genera una mejor tolerancia del paciente en el postoperatorio. El uso de azitromicina postoperatoria disminuyó el proceso inflamatorio favoreciendo la cicatrización, lográndose una correcta permeabilización de las coanas y una respiración nasal normal bilateral. Conclusiones: El diagnóstico temprano en este tipo de pacientes es fundamental, debido a la característica de respiradores nasales estrictos que presentan los neonatos. No se han encontrado reportes de pacientes diagnosticados en la adolescencia, por lo cual el diagnóstico y el tratamiento, en este caso, plantearon también un desafío.

Introduction: choanal atresia is a nasal congenital anomaly with an incidence of 1 / 70,000 live births in Argentina. It presents with respiratory difficulty from birth in bilateral cases. We will present 2 cases of male patients with bilateral choanal atresia of late diagnose. We used a trans-septal endoscopic technique with folded flap without tutors and azithromycin as an anti-inflammatory of the respiratory mucosa in the postoperative time. Material and method: A descriptive and retrospective study was carried out on 2 adolescent patients diagnosed and surgically treated in the Otorhinolaryngology Service of the Posadas Hospital, using transeptal endoscopy with a folded flap technique without tutors. Variables such as atresia plaque type, age of diagnosis, associated malformations, complications and surgical results were analyzed. Azithromycin was used at anti-inflammatory doses as a post-surgical medical treatment. Results: The transnasal endoscopic technique with folded flaps that we performed in these two patients reduces the risk of restenosis, does not require subsequent reinterventions to remove the stent and generates a better patient tolerance in the postoperative period. As for the use of postoperative azithromycin, the inflammatory process decreased, favoring cicatrization, being able to achieve a correct permeabilization of the choanas and a normal bilateral nasal breathing. Conclusions: We believe that early diagnosis in this type of patients is essential, due to the characteristic of strict nasal breathers presented by the neonates. There were no reports of patients diagnosed in adolescence, so the diagnosis and treatment, in this case, also posed a challenge.

Introdução: a atresia de choana é uma anomalia congênita nasal com incidência de 1 / 70.000 nascidos vivos na Argentina. Esse transtorno/a mesma apresenta dificuldade respiratória desde o nascimento no caso seja bilateral. (Em este estudo) apresentaremos dois casos de pacientes do sexo masculino com atresia de choana bilateral diagnosticada tardiamente. Uma técnica endoscópica trans-septal com aba curvada sem tutores e azitromicina como anti-inflamatório da mucosa respiratória foi utilizada como tratamento pós-cirurgico. Material e método: Foram avaliados de forma descritiva e retrospetiva dois pacientes adolescentes diagnosticados e tratados cirúrgicamente no serviço de Otorrinolaringologia do Hospital Posadas pela técnica transeptal endoscopica sem tutores aba dobrada. São analisados valores como tipo de placa de atresia, idade do diagnóstico, malformações associadas, complicações e resultados cirúrgicos. Como tratamento médico pós-cirúrgico, a azitromicina foi utilizada em dosagens anti-inflamatórias. Resultados: A técnica endoscópica trans-nasal com abas dobradas sem tutor que foi realizada em estes dois pacientes, reduz o risco de re-estenose, não precisando de novas intervenções cirúrgicas para remover o stent e gerar uma melhor tolerância do paciente no pós-operatório. Quanto ao uso de azitromicina pós-operatória, o processo inflamatório diminuiu, favorecendo a cicatrização, conseguindo uma permeabilização correta da choana e uma respiração nasal bilateral normal. Conclusões: Acreditamos que o diagnóstico precoce neste tipo de pacientes é fundamental, devido à característica de respiradores nasais estritos apresentada pelos neonatos. Não houve relatos de pacientes diagnosticados na adolescência, pelo que o diagnóstico e o tratamento, neste caso, também representaram um desafio.

Atresia de coana unilateral: o uso de molde na cirurgia da reestenose / Unilateral choanal atresia: the use of cast in surgery for restenosis

Introdução: A atresia de coana (AC) é a anomalia nasal congênita mais comum. Estima-se a incidência de 1 caso para cada 8000-10000 nascidos vivos. Relato do caso: Paciente feminina, 9 anos, com obstrução nasal em fossa nasal direita (FND) desde o nascimento. Apresentava roncos e apneia em vigência de infecção de via aérea superior. À rinoscopia anterior direita, secreção hialina abundante. À videonasoendoscopia flexível não foi possível visualizar cavum pela FND, observando-se estase de secreção em região posterior; à esquerda cavum livre, sem lesão expansiva. Tomografia de nariz e seios paranasais evidenciou atresia de coana mista à direita. Foi realizada cirurgia para correção da malformação. Após 30 dias, observou-se reestenose do cavum. Na reintervenção, a coana foi ampliada com remoção do osso palatino e do septo posterior, realizada dilatação com balão e posicionado molde de silicone. Realizada aplicação de Mitomicina. A remoção do molde foi feita em bloco cirúrgico após 42 dias, com permeabilidade coanal preservada. Nasofibroendoscopia após 6 meses mostrou fossas nasais pérvias. Discussão: Ainda há controvérsias na literatura quanto à efetividade das diferentes técnicas cirúrgicas e ao uso de stents e de agentes antineoplásicos no pós-operatório. Neste relato, a dilatação com balão pode ter contribuído para o sucesso da cirurgia, porém o molde foi fundamental para evitar a reestenose. Considerações finais: O uso do molde mostrou um excelente resultado nesta reintervenção de correção de atresia de coana. A baixa reação inflamatória e o sucesso do pós-operatório mostraram que esta é uma opção a ser utilizada para evitar a reestenose (AU)

Introduction: Choanal atresia (CA) is the most common congenital nasal anomaly. Its incidence is estimated as 1 case for every 8,000-10,000 live births. Case report: Female patient, 9 years old, with obstruction in the right nasal cavity (RNC) since birth. She presented snoring and apnea in the presence of upper airway infection. At right anterior rhinoscopy, abundant hyaline secretion. Flexible videonasoendoscopy failed to visualize cavum through RNC, with secretion stasis in posterior region; left cavum free, without expansive lesion. Tomography of the nose and paranasal sinuses revealed mixed choanal atresia on the right. Surgery was performed to correct the malformation. Thirty days later, restenosis of the cavum was observed. At reoperation the choana was enlarged with removal of the palatine bone and posterior septum, balloon dilatation was performed and a silicone cast was positioned. Mitomycin application was performed. Removal of the cast was done in surgical ward after 42 days, with preserved choanal permeability. Nasofibroscopy at 6 months postoperatively showed permeable nasal cavities. Discussion: There is still controversy in the literature regarding the effectiveness of different surgical techniques and the use of stents and anti-neoplastic agents in the postoperative period. In this report, balloon dilatation may have contributed to the success of the surgery, but the cast was crucial to avoid restenosis. Final considerations: The use of the cast had an excellent outcome in this re-intervention of choanal atresia correction. The low inflammatory reaction and postoperative success have shown that this is an effective option to be used to avoid restenosis (AU)

False Computed Tomography Findings in Bilateral Choanal Atresia

Abstract Introduction Choanal atresia (CA) is a challenging surgical problem defined as a failure in the development of communication between the nasal cavity and nasopharynx. Objective The objective of this study is to describe computed tomography (CT) findings in cases with bilateral choanal atresia. Methods The study involved performing axial and coronal non-contrast CT scanning with 2-3 mm sections on14 neonates that had bilateral CA. We used fiberoptic nasal endoscopy to confirm the diagnosis. We evaluated coronal CT to study the skull base area in such neonates. Results This study included 14 neonates with bilateral CA; with mean age of 7 3.5 days. Mixed atretic plates were found in 12 (85.7%) cases while two (14.3%) had pure bony atresia. Isolated CA was detected in 9 cases (64.3%) and 5 (35.7%) cases had associated anomalies. Coronal CT showed soft tissue density in the nasal cavity that appeared to extend through an apparent defect in the nasal roof (cribriform plate), falsely diagnosed by radiologists as associated encephalocele. At the time of surgical repair, all patients showed thick tenacious mucous secretions in both nasal cavities and revealed no encephalocele. Nasal roof remained intact in all cases. Conclusion The thick secretion of bilateral CA could give a false encephalocele appearance on the CT. It is highly recommended to perform proper suction of the nasal cavity of suspected CA cases just before CT scanning.

Atresia de coanas bilateral em recém nascido: relato de caso / Bilateral choanal atresia in RN: case report

Os autores relatam o caso de um Recém Nascido Pré Termo de 36 semanas, parto cesária, nascido no dia 09/09/2011, em Juiz de Fora - Minas Gerais, peso de nascimento: 1.480 gramas, estatura 43 centímetros, P.C.: 30,5 centímetros, sexo: masculino, Apgar 1° minuto: 2 e do 5° minuto: 8, evoluindo com desconforto respiratório e necessitando de ambu e máscara em sala de parto, em seguida foi levado para o Centro de Terapia Intensiva, sendo entubado e permanecendo em ventilação mecânica. Foi pedido parecer para otorrinolaringologia e realizou-se a Tomografia Computadorizada, onde apresentou sinais compatíveis com Atresia de Coanas Bilateral.

Atresia de coanas, revisión y una mirada desde la evidencia / Choanal atresia, review and a look from the evidence

La atresia de coanas es la anomalía congénita nasal más común. Cuando es bilateral, se presenta con dificultad respiratoria desde el nacimiento. La atresia unilateral se manifiesta con insuficiencia ventilatoria y rinorrea unilateral, pudiendo pasar inadvertida. El diagnóstico se sospecha ante la ausencia de paso de aire en las fosas nasales y la imposibilidad de hacer progresar una sonda nasogástrica. Se confirma mediante examen endoscópico y tomografía computarizada. El tratamiento definitivo es quirúrgico, existiendo diferentes técnicas y vías de abordaje. Se presenta una revisión de la literatura, con especial énfasis en el tratamiento pos-quirúrgico con stents y mitomicina-C a través de una mirada desde la evidencia.

Choanal atresia is the most common congenital nasal anomaly. When bilateral, it presents with respiratory distress at birth. Unilateral atresia is manifested by respiratory failure and unilateral rhinorrhea, and may go along unnoticed. Diagnosis is suspected in the absence of airflow in the nasal cavity and for the inability to advance a nasogastric tube. Diagnosis is confirmed by endoscopic examination and computed tomography. The definitive treatment is surgical, and there are different techniques and surgical approaches. A review of the literatureis presented, with special emphasis onthepost-surgical treatmentwithstents and Mitomycin-Cview from the evidence.

Retrospective Study of a Series of Choanal Atresia Patients

Introduction: Although it has been more than 250 years since the first description of choanal atresia (CA), there are still doubts about this abnormality. The differences between unilateral and bilateral forms are seldom discussed. Objectives: Aggregate data from patients diagnosed with CA, grouping patients with unilateral and bilateral forms. Methods: Retrospective study. Results  Eighteen patients were included: 12 (66.6%) presented bilateral atresia, of which 77.8% were mixed bony-membranous type and 22.2% were pure bony type. From the 12 patients with bilateral atresia, 10 presented related malformations, 3 of whom had CHARGE syndrome (coloboma, heart defects, choanal atresia, retardation of growth and development, genitourinary problems, ear abnormalities). From the remaining 6 patients with unilateral atresia, only 2 showed malformations, 1 renal and 1 cardiac. All patients with unilateral atresia needed only 1 surgical procedure, and patients with the bilateral form needed a median of 2.85 interventions (p = 0.003). The median age of surgical procedure in the unilateral group was 6 years, ranging from 6 months to 18 years, and in the bilateral group was 25 days, ranging from 6 days to 6 years (p = 0.003). The median interval between diagnosis and surgery was 9 months in the unilateral group, ranging from 1 month to 18 years, and in the bilateral group was 1 day, ranging from 1 day to 2 months (p = 0.001). Discussion and Conclusions:  Success rates with the endoscopic approach vary from 62 to 100%. Nonetheless, most of these reports present results without considering the number of compromised sides. In our opinion, unilateral and bilateral cases involve distinct patients (taking into account the related malformations), have diverging clinical presentations, and show discrepant restenosis rates and therefore could be considered in different groups of analysis...

Tratamiento quirúrgico de la atresia de coanas: caso clínico / Surgical repair of choanal atresia

La atresia de coanas es la alteración congénita más frecuente del desarrollo nasal. Puede ser unilateral o bilateral, y según eso, la clínica puede aparecer desde el momento del nacimiento, o bien permanecerá asintomática hasta la edad adulta. En el neonato, si es bilateral, se manifiesta por una disnea inspiratoria y una cianosis cíclica al lactar, que se alivian con el llanto; y en el adulto, la clínica es de insuficiencia respiratoria nasal unilateral, con rinorrea. El tratamiento es quirúrgico, con varias vías posibles de abordaje, siendo la vía endoscópica la más utilizada hoy en día. La complicación más frecuente tras la cirugía es la reestenosis. Presentamos el caso de una paciente con atresia unilateral, que fue intervenida con éxito en nuestro hospital, y describimos la técnica.

Choanal atresia is the most frecuent congenital anomaly of nasal development. It can be unilateral or bilateral, and according to it, it will give symptoms from the moment of the birth, or will remain asymptomatic up to the adult age. In the newborn it demonstrates for an acute respiratory distress and a cyclic cyanosis by feeding, that relieve with crying; and in the adult, the clinic is of unilateral nasal obstruction, with rhinorhea. The treatment is surgical, with several possible surgical approaches. Transnasal endoscopic repair is the most used nowadays, because it's a safe and successful technique, and reestenosis is the most frequent complication. We present the case of a patient with unilateral atresia, that was operated in our hospital, and we describe the technique used.

Obstrucción nasal congénita por atresia de coanas: serie de casos / Congenital nasal obstruction due to choanal atresia: case series

La obstrucción de las fosas nasales en el neonato es un cuadro potencialmente fatal por su respiración nasal obligada. Las causas congénitas más frecuentes son: atresia coanal, quiste dermoide, glioma y encefalocele. La atresia de coanas es la anomalía congénita nasal más común. Cuando es bilateral, se presenta con dificultad respiratoria desde el nacimiento. La atresia unilateral se manifiesta con insuficiencia ventilatoria y rinorrea unilateral, pudiendo pasar inadvertida. El diagnóstico se sospecha ante la ausencia de paso de aire en las fosas nasales y la imposibilidad de hacer progresar una sonda nasogástrica. Se confirma mediante examen endoscópico y tomografía computada. El tratamiento definitivo es quirúrgico, existiendo diferentes técnicas y vías de abordaje. Describimos nuestra experiencia con 7 pacientes que presentaron esta patología, exitosamente tratados mediante técnica endoscópica transnasal.

Reparación endoscópica transnasal de la atresia de coanas. Estado del arte: resultados en 16 casos Hospital Universitario del Valle - Universidad del Valle. Cali, Colombia / Transnasal endoscopic repair of choanal atresia. State of the Art: results in 16 cases

Objetivo: Describir la epidemiologia local y la experiencia en el manejo de casos de atresia de coanas con la técnica de cirugía endoscópica transnasal e instrumental de poder. Diseño: Estudio retrospectivo. Metodología: Se toman 16 casos con diagnóstico de atresia de coanas, en los que fueron consideradas variables clínicas, método diagnóstico, lateralidad, tipo de atresia, manejo inicial y técnica quirúrgica. Se realizó análisis estadístico en Stata, versión 11.1. Resultados: En esta serie de casos, diez eran mujeres y seis hombres, con una relación mujer-hombre de 1,7:1; 56% de ellos fueron bilaterales, 56% de presentaron anomalías congénitas y la edad al diagnóstico fue postneonatal en el 81%. No se encontró asociación estadística entre sexo, tipo de atresia y lateralidad. El principal método diagnóstico fue la tomografía axial computarizada, en el 87,6% de los estudios. El 94% de los pacientes presentaron buen resultado quirúrgico funcional con la técnica endoscópica…

Objective: Describe the local epidemiology and the experience in the management of choanal atresia with endoscopic transnasal approach and power instruments. Methodology: Retrospective study of 16 cases with diagnosis of choanal atresia was considered variable clinics, diagnosis method, laterality, type of atresia, initial management and surgical technique. We performed statistical analysis in Stata, version 11.1. Results: In this series of cases, 10 was women and 6 was men, relation 1,7:1; 56% had associated congenital anomalies, the age of diagnosis was post neonatal 81%. There was no statistical association between sex, type of atresia and latelality. The main method diagnosis was the TAC in 87.6%. 94% of the patients showed a good surgical outcome with functional endoscopic technique. Conclusions: The experience observed in this series of cases with the use of technique endoscopic transnasal and power instrumentation (Shaver - Drill), represent a form of technique minimal invasive approach for this type of nasal congenital pathology with low degree of morbility, complications and excellent functional results…

Secuencia de bridas amnióticas y atresia bilateral de coanas: reporte de un caso / Amniotic band sequence and bilateral choanal atresia: a case report

La secuencia de bridas amnióticas (SBA) es un grupo de malformaciones de tipo disruptivo que afecta principalmente las extremidades; clínicamente, se observan anillos de constricción y linfedema en dedos, brazos y piernas; pseudosindactilias y acrosindactilias; además, existe amputación congénita de las extremidades por tumefacción distal; en algunos pacientes se han comunicado, con menor frecuencia, alteraciones craneofaciales y del tronco. La etiología es aún desconocida y la mayoría de los casos son aislados. En este informe presentamos el caso de un paciente masculino, de 45 días de nacido, con diagnóstico de SBA y atresia bilateral de coanas como hallazgo adjunto; se revisan las posibles causas del SBA y las alteraciones asociadas.

Amniotic band sequence (ABS) is a group malformation that mainly affects limbs; clinically, constriction rings and lymphedema of the fngers, arms and legs, acrosyndactyly and pseudosyndactyly are observed; also there is congenital amputation of limbs due to distal swelling. Less frequently, craniofacial and trunk involvement are reported in some patients. Etiology is still unknow and most cases are isolated. In this report we present the case of a 45-day-old male with diagnosis of SBA and bilateral choanal atresia as attached fnding, and review possible causes of SBA and associated alterations.

Atresia coanal congénita unilateral en paciente adulto: presentación de un caso y revisión bibliográfica sobre vías de abordaje: complicaciones y tratamientos adicionales / Unilateral congenital choanal atresia in adult patient: case report and bibliographical review about surgical approaches, complications and additional treatments

La atresia de coanas, es una patología poco frecuente, que habitualmente se diagnostica en las edades tempranas. Representa un reto quirúrgico por su alta tendencia a la reestenosis, considerándose en la actualidad de elección el tratamiento endoscóplco. Tratamientos como stents posoperatorios o la aplicación de mitomicina C tópica para disminuir la reestenosis son todavía controvertidos, sin que exista consenso. Presentamos el caso de un adulto con atresia de coana unilateral que se reparó vía endoscópica transnasal y se realiza una revisión bibliográfica sobre el estado actual del tratamiento de esta patología.

Choanal atresia is a very rare condition, usually it's diagnosticated in early age. It represents a surgical challenge for the high tendency to restenosis, being actually the endoscopic treatment first option. Other treatments like postoperative stents or topical mitomycin-C in order to avoid restenosis are controversial, and there is a lack of consensus. We present an adult case with unilateral choanal atresia treated by transnasal endoscopic technique and It's carry out a bibliographical review about the current treatment state of this pathology.

Atresia coanal bilateral em paciente de 34 anos / Bilateral choanal atresia in 34 year-old patients

Introdução: A atresia de coanas (AC) pode ser definida como a falha no desenvolvimento da comunicação entre a cavidade nasal e a nasofaringe. Pode ocorrer como uma placa ósteo-membranosa, óssea ou membranosa. O diagnóstico depende de alto grau de suspeição clínica e exames complementares, o tratamento é cirúrgico. Objetivo: Relatar um caso de uma paciente adulta com diagnóstico de atresia coanal bilateral e que foi submetida a tratamento cirúrgico. Relato do Caso: MLSM, 34 anos,sexo feminino, com história de obstrução nasal bilateral, rinorreia hialina desde a infância. Na endoscopia nasal e Tomografia Computadorizada de seios da face evidenciou atresia ósteo-membranosa bilateral. Paciente foi submetida a tratamento cirúrgico endoscópico via transnasal, com confecção de retalho mucoso cobrindo a área cruenta, sem colocação de stent. Foi feito Tomografia de controle que evidenciou coanas abertas e amplas. Paciente evoluiu bem e apresenta respiração nasal normal. Comentários Finais: A AC bilateral, embora rara, pode ocorrer em pacientes adultos...

Introduction: Choanal atresia (CA) can be defined as a failure to develop the communication between the nasal cavity and nasopharynx. May occur as a plate osteo-membranous, bony or membranous. Diagnosis depends on high clinical suspicion and laboratory tests, treatment is surgical. Objective: To report a case of an adult patient diagnosed with bilateral choanal atresia and underwent surgery. Case Report: MLSM, 34 years old female with a history of bilateral nasal obstruction, rhinorrhea hyaline since childhood. On nasal endoscopy and CT scan of the sinuses showed bilateral membranous atresia osteo. Patient underwent endoscopic transnasal route, with production of mucosal flap covering the wound, without stent placement. Tomography was performed which showed control choanae open and broad. The patient progressed well and has normal nasal breathing. Conclusion: AC bilateral, although rare, can occur in adult patients...

Atresia de coanas, tratamiento quirúrgico endoscópico, 5 años de experiencia / Choanal atresia, endoscopic surgical repair, a 5 year experience

Atresia de coanas es la obstrucción congénita de la región posterior de las fosas nasales. Múltiples técnicas quirúrgicas han sido empleadas para su reparación. En el presente estudio se recopiló la información de 5 años de trabajo en el Hospital Universitario del Valle en la ciudad Santiago de Cali - Colombia, entre los años 2003 y 2008. Se obtuvo un total de 16 casos.La información demográfica documentada incluyó datos como edad, sexo, síntomas iniciales, método diagnóstico, lateralidad, tipo de atresia de coanas, comorbilidades, tratamiento inicial, edad de intervención quirúrgica, técnica quirúrgica usada. La técnica quirúrgica consistió en el fresado y apertura de la placa atrésica vía endoscópica transnasal utilizando taladro, previa realización de colgajos mucosos en cruz y resecando parcialmente paredes del vómer.La experiencia observada en estos 5 años de trabajo demuestra que el abordaje endoscópico transnasal presenta grandes ventajas, entre ellas la baja tasa de reestenosis.

Choanal atresia is a congenital disorder where the back of the nasal passage is blocked. Many surgical techniques have been used to repair this disorder. In this study we collected information from 5 years of work at the Hospital Universitario del Valle in the city of Santiago de Cali - Colombia, between 2003 and 2008. A total of 16 cases were obtained. The documented data included demographic information like age, sex, initial symptoms, diagnostic methods, laterality, type of atresia, comorbilities, initial treatment and surgical technique used. The surgical technique consisted in endoscopic opening of the atretic plate using drill. Mucosal flaps and resection of partial plate of vomer were made previously.The experience observed in these 5 years of work shows that the endoscopic transnasal approach has major advantages, including low restenosis rate.