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Carotid body tumors (CBTs) are a neoplasm that affects the carotid glomus. This study aims to improve the management of CBTs in Ecuador. This single-center, retrospective observational study was conducted at the Instituto de la Tiroides y Enfermedades de Cabeza y Cuello (ITECC). We included adults with CBTs, between January 2019 and August 2022. A total of 15 patients with CBTs were included. All patients were females living at high altitudes (>2500 m). In the Shamblin classification, 12 tumors were type II, and 3 were type III. Complete tumor resection was performed in all patients without pre-operative embolization. All patients had benign CBTs with a mean follow-up of 17, 73 months. In a time when the medical cost is high mainly in low-income countries such as Ecuador, further investigation should be undertaken in the form of randomized prospective trials to answer who would benefit from the pre-TAE procedure.

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OBJECTIVE: Analysis of the results of emergency carotid endarterectomy (CEE) in internal carotid artery (ICA) thrombosis in the acute period of acute cerebrovascular accident (ACVI) in patients with COVID-19. MATERIAL AND METHODS: During the COVID-19 pandemic (April 1, 2020 - May 1, 2021), 43 patients with ICA thrombosis and a positive polymerase chain reaction (PCR) result for SARS-CoV-2 were included in this prospective study. In all cases, CEE was performed in the acutest period of ACVA. These patients were included in group 1. The comparison group was represented by 89 patients who underwent CEE in the acute period of stroke, in the period before the COVID-19 pandemic (April 1, 2019 - March 1.2020). RESULTS: In the hospital postoperative period, the groups were comparable in terms of the incidence of deaths (group 1: 2.3%, n=1; group 2: 1.1%, n=1; p=0.81; OR=2.09; 95% CI=0.12-34.3) myocardial infarction (group 1: 2.3%, n=1; group 2: 0%; p=0.7; OR=6.3; 95% CI=0.25-158.5), CVA (group 1: 2.3%, n=1; group 2: 2.2%, n=2; p=0.55; OR=1.03; 95% CI=0.09-11.,7). ICA thrombosis and hemorrhagic transformations were not recorded. However, in view of severe coagulopathy with ongoing anticoagulant/antiplatelet therapy, patients with COVID-19 more often developed bleeding in the operation area (group 1: 11.6%, n=5; group 2: 1.1%, n=1; p=0.02; OR=11.5; 95% CI=1.3-102.5). CONCLUSION: Emergency CEE in the acute period of stroke is an effective and safe method of cerebral revascularization in case of ICA thrombosis in conditions of COVID-19.

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Introducción: El glomus carotídeo es un paraganglioma extraadre-nal, excepcional en la infancia, cuyo origen es el cuerpo carotídeo. Soloel 3% de los paragangliomas se presentan en cabeza y cuello. Existeun 10% de formas familiares asociadas a mutaciones en el gen de lasuccinato deshidrogenasa (SDH), porcentaje que es mayor en la infancia.Son tumores benignos en un 95% de los pacientes, pero pueden afectarpor extensión a ambas carótidas. Su tratamiento es quirúrgico con o sinembolización previa. Las metástasis son raras y están asociadas a losescasos casos de malignidad. Caso clínico: Paciente de 8 años de edad con masa cervical de 4meses de evolución, serologías normales. Como antecedente destacauna tía sometida a cirugía cervical. Ecográficamente se objetiva masahipoecoica muy vascularizada en probable relación con glomus ca-rotídeo. Se decide resección quirúrgica sin embolización que resultacompleta y sin incidencias. Estudio genético positivo para la mutaciónen el gen de la SDH. Conclusión: El glomus carotídeo en la infancia ha de ser tenido encuenta como diagnóstico diferencial en masas cervicales. El tratamientoquirúrgico sin embolización previa es una opción terapéutica segura encasos seleccionados.(AU)

Introduction: Carotid glomus is an exceptional extra-adrenal para-ganglioma in childhood originating at the carotid body. Only 3% ofparagangliomas occur in the head and the neck. Familial forms, associ-ated with Succinate Dehydrogenase (SDH) gene mutations, account for10% of cases, the proportion being higher in childhood. They are benignin 95% of patients, but they can extend to both carotids. Treatment issurgical with or without previous embolization. Metastasis is rare andassociated with malignant cases, which are limited. Clinical case. 8-year-old patient with a cervical mass originating4 months ago and normal serum levels. Regarding family history, shehad an aunt who underwent cervical surgery. Ultrasound examinationdemonstrated a greatly vascularized hypoechoic mass most likely relatedto carotid glomus. Full surgical resection without embolization wasdecided upon, which proved uneventful. The genetic study was positivefor SDH gene mutation.Conclusion: Carotid glomus in childhood should be considered as adifferential diagnosis in cervical masses. Surgical treatment without pre-vious embolization represents a safe therapeutic option in selected cases.(AU)

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INTRODUCTION: Carotid glomus is an exceptional extra-adrenal paraganglioma in childhood originating at the carotid body. Only 3% of paragangliomas occur in the head and the neck. Familial forms, associated with Succinate Dehydrogenase (SDH) gene mutations, account for 10% of cases, the proportion being higher in childhood. They are benign in 95% of patients, but they can extend to both carotids. Treatment is surgical with or without previous embolization. Metastasis is rare and associated with malignant cases, which are limited. CLINICAL CASE: 8-year-old patient with a cervical mass originating 4 months ago and normal serum levels. Regarding family history, she had an aunt who underwent cervical surgery. Ultrasound examination demonstrated a greatly vascularized hypoechoic mass most likely related to carotid glomus. Full surgical resection without embolization was decided upon, which proved uneventful. The genetic study was positive for SDH gene mutation. CONCLUSION: Carotid glomus in childhood should be considered as a differential diagnosis in cervical masses. Surgical treatment without previous embolization represents a safe therapeutic option in selected cases.

INTRODUCCION: El glomus carotídeo es un paraganglioma extraadrenal, excepcional en la infancia, cuyo origen es el cuerpo carotídeo. Solo el 3% de los paragangliomas se presentan en cabeza y cuello. Existe un 10% de formas familiares asociadas a mutaciones en el gen de la succinato deshidrogenasa (SDH), porcentaje que es mayor en la infancia. Son tumores benignos en un 95% de los pacientes, pero pueden afectar por extensión a ambas carótidas. Su tratamiento es quirúrgico con o sin embolización previa. Las metástasis son raras y están asociadas a los escasos casos de malignidad. CASO CLINICO: Paciente de 8 años de edad con masa cervical de 4 meses de evolución, serologías normales. Como antecedente destaca una tía sometida a cirugía cervical. Ecográficamente se objetiva masa hipoecoica muy vascularizada en probable relación con glomus carotídeo. Se decide resección quirúrgica sin embolización que resulta completa y sin incidencias. Estudio genético positivo para la mutación en el gen de la SDH. CONCLUSION: El glomus carotídeo en la infancia ha de ser tenido en cuenta como diagnóstico diferencial en masas cervicales. El tratamiento quirúrgico sin embolización previa es una opción terapéutica segura en casos seleccionados.

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Introducción. El carcinoma del glomus carotideo es infrecuente y se presenta en el 6 % de los paragangliomas carotideos. Suele haber dificultad en su diagnóstico preoperatorio y no se diferencia fácilmente de su contraparte benigna, lo que puede conllevar a complicaciones quirúrgicas. Este trabajo describe la experiencia en su abordaje clínico y quirúrgico en una serie de casos, además de una revisión de la literatura profundizando en su diagnóstico, abordaje terapéutico, sobrevida y mortalidad. Métodos. De los pacientes operados por glomus carotideos durante un periodo de 20 años, se identificaron aquellos llevados a cirugía por carcinoma. Se realizó una búsqueda bibliográfica extensa en PubMed, haciendo énfasis en diagnóstico y tratamiento. Resultados. De un total de 139 pacientes sometidos a cirugía de resección de tumor del cuerpo carotideo, tres pacientes (2,2 %) presentaron carcinoma. Dos tenían metástasis cervicales y uno metástasis hepáticas. Uno presentaba glomus bilateral asociado a trastorno genético de origen familiar. Se realizó cirugía y adyuvancia en todos los casos. Discusión. El diagnóstico diferencial preoperatorio entre glomus benigno y maligno es difícil, por lo cual deben buscarse hallazgos clínicos o factores de riesgo que puedan sugerir malignidad. Las imágenes pocas veces muestran características claras de invasión vascular. Siempre que sea posible, en el tratamiento del cáncer del glomus carotideo, debe realizarse resección quirúrgica, acompañada de un vaciamiento funcional de cuello, dejando la radioterapia, la quimioterapia y la hormonoterapia como terapias adyuvantes

Introduction. Carcinoma of the carotid glomus is rare and occurs in 6% of carotid paragangliomas. There is often difficulty in its preoperative diagnosis, and it is not easily differentiated from its benign counterpart, which can lead to surgical complications. This study describes the experience in its clinical and surgical approach in a series of cases, as well as a review of the literature of its diagnosis, therapeutic approach, survival, and mortality.Methods. Of the patients operated for carotid glomus over a 20-year period, those undergoing surgery for carcinoma were identified. An extensive literature search was conducted in PubMed, with an emphasis on diagnosis and treatment.Results. Out of a total of 139 patients who underwent carotid body tumor resection surgery, three patients (2.2%) had carcinoma. Two had cervical metastases and one had liver metastases. One had bilateral glomus associated with a genetic disorder of familial origin. Surgery and adjuvant surgery were performed in all cases.Discussion. The preoperative differential diagnosis between benign and malignant glomus is difficult, for which clinical findings or risk factors that may suggest malignancy should be sought. Images rarely show clear features of vascular invasion. Whenever possible in the treatment of carotid glomus cancer, surgical resection should be performed, accompanied by a functional neck dissection, leaving radiotherapy, chemotherapy, and hormone therapy as adjuvant therapies

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O tumor de corpo carotídeo é uma neoplasia rara, geralmente benigna, que acomete, sobretudo, indivíduos entre a quarta e a quinta décadas de vida. Manifesta-se pela presença de massa cervical consistente localizada abaixo do ângulo da mandíbula, pulsátil e comumente indolor. Pode evoluir para dor local, disfagia, soluços, rouquidão e síndrome do corpo carotídeo hipersensível. Este artigo relata os casos de duas pacientes diagnosticadas com essa neoplasia e submetidas ao tratamento cirúrgico. A primeira foi submetida a uma ressecção em bloco do tumor, enquanto a segunda, com estadiamento mais precoce, foi tratada com uma ressecção subadventicial da lesão.

A carotid body tumor is a rare neoplasm, generally benign, that predominantly affects people between their fourth and fifth decades of life. It manifests as a pulsatile and generally painless cervical mass with firm consistency, located below the angle of the jaw. It can progress to the extent that it causes localized pain, dysphagia, hiccups, hoarseness and hypersensitive carotid body syndrome. This article reports the cases of two female patients diagnosed with this tumor who were treated surgically. The first was treated with block resection of the tumor, while the second patient, who had an early stage tumor, was treated with subadventitial resection of the lesion.

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Los tumores del glomus carotídeo se caracterizan por su vascularización importante y su manejo preoperatorio puede incluir la embolización percutánea previa a la resección quirúrgica. Esta técnica disminuye la hemorragia y el tamaño del tumor y hace menos riesgosa la disección, con reducción de la morbimortalidad. Una técnica alternativa es la interrupción de la irrigación del tumor mediante la colocación de un stent cubierto en la carótida externa, que es la vía principal de irrigación. Esta técnica es útil en especial en tumores grandes y evita el riesgo de embolia intracraneal cuando se emplean coils para realizar la embolización. En esta presentación se describe el caso de una paciente de 31 años tratada de esta manera; se le colocó el stent y 24 horas después se realizó la resección del tumor.

Glomus tumors are hypervascularized neoplasms which may require preoperative percutaneous embolization. This technique reduces the incidence of bleeding, the tumor size, the risk of resection-related complications, and morbidity and mortality. The interruption of the tumor blood supply placing a covered stent in the external carotid artery, the main tumor-supplying vessel, is an alternative option. This technique is especially useful in large tumors and prevents the risk of intracranial embolism when coils are used during embolization. We describe the case of a 31 year-old female patient who underwent stent placement 48 hours before tumor resection.