Paraganglioma lateroaórtico / Latero-aortic paraganglioma

RESUMEN El feocromocitoma es un tumor productor de catecolaminas que procede de las células cromafines del sistema nervioso simpático. El 80-85% se localiza en la médula suprarrenal y el 15-20% son de localización extra adrenal y se denominan paragangliomas (PG). Alrededor del 97 % son benignos y se curan mediante la extirpación quirúrgica, y el restante 3% son malignos, capaces de producir metástasis a distancia. Se presenta el caso de una mujer de 43 años, que consultó por hipertensión, cefalea y palpitaciones. Presentaba elevación de catecolaminas urinarias, y por resonancia magnética se diagnosticó una masa de 50 por 41 mm latero aórtica. Le fue efectuada su resección por vía laparoscópica, sin complicaciones, con desaparición de los síntomas.

ABSTRACT Pheochromocytomas are catecholamine-producing tumors arising from the chromaffin cells of the sympathetic nervous system. Between 80-85% occur in the adrenal medulla and 15-20% are extraadrenal and are called paragangliomas (PG). About 97% are benign and are solved by surgical resection, while the remaining 3% are malignant and may produce distant metastases. We report the case of 43-year-old female patient who consulted due to hypertension, headache and palpitations. She had elevated urine catecholamines and presented a 50 x 41 mm latero-aortic mass on magnetic resonance imaging. The patient underwent laparoscopic resection of the tumor without complications and experienced relief of symptoms.

Condroma pulmonar y paraganglioma carotídeo como manifestaciones de la tríada de Carney: reporte de un caso / Pulmonary chondroma and carotid paraganglioma as expressions of Carney's triad: report of a case

Resumen Objetivos: Presentar caso clínico y revisión de la literatura sobre asociación de tumores poco frecuentes compatibles con diagnóstico de tríada de Carney. Paciente y Métodos: Revisión de ficha clínica de paciente de sexo femenino de 39 años de edad con antecedentes de asma, quien acude a servicio de urgencias por síntomas respiratorios. En estudio con imágenes se evidencia masa pulmonar en lóbulo superior derecho probablemente hamartoma y masa en la bifurcación carotídea izquierda compatible con posible paraganglioma. Se completó el estudio con endoscopia digestiva alta sin evidencia de tumor gástrico y PET-CT (tomografía de emisión de positrones-tomografía computarizada) que descartó otras lesiones. Resultados: La paciente fue sometida a resección quirúrgica de ambos tumores (pulmonar y carotídeo). En estudio histopatológico diferido, se plantean los diagnósticos de paraganglioma carotideo y hamartoma pulmonar, el cual, luego de una segunda revisión histopatológica, es corregido a condroma pulmonar. Discusión: La tríada de Carney se compone por la asociación de al menos 2 de 3 tumores: tumor estromal gastrointestinal (GIST), paraganglioma extra-adrenal y condroma pulmonar. Su expresión es variable, coexistiendo en forma completa en solo el 22% de los casos. Conclusión: Los pacientes con sospecha de tríada de Carney deben recibir evaluación multidisciplinaria, estudio completo en búsqueda de tumores asociados y seguimiento a largo plazo por posibles recurrencias o metástasis.

Objective: To present a clinical case and review of the literature on the infrequent association of pulmonary and extra thoracic tumors compatible with Carney's triad. Patient and Methods: Review of clinical records of a 39 years-old female patient with history of asthma who presented in the emergency department with respiratory symptoms. An imaging study showed a pulmonary mass in the right upper lobe with the aspect of hamartoma and a mass in the left carotid artery bifurcation compatible with a possible paraganglioma. Upper gastrointestinal endoscopy showed no evidence of gastric tumor and a PET-CT (Positron Emission Tomography - Computed Tomography) excluded other lesions. Results: Patient underwent surgical resection of both tumors (pulmonary and carotid). Diagnosis of carotid paraganglioma and pulmonary hamartoma were stated by histopathology. However, lung tumor after a second pathological analysis was confirmed to be a pulmonary chondroma. Discussion: Carney's triad is defined by the association of at least 2 of 3 tumors: Gastrointestinal Stromal Tumor (GIST), extraadrenal paraganglioma and pulmonary chondroma. Its expression is variable, coexisting completely in only 22% of cases. Conclusion: Patients with suspected Carney's triad should receive a multidisciplinary assessment, a complete study searching associated tumors and long-term follow-up for recurrences or metastases.

El paraganglioma como tumor mesentérico infrecuente / Mesenteric paraganglioma: a rare tumor

RESUMEN Los paragangliomas son tumores originados en las células neuroendocrinas que forman el sistema nervioso autónomo. Se consideran benignos aunque pueden desarrollar malignidad, por lo que su tra tamiento es quirúrgico. La presentación de paraganglioma de ubicación mesentérica es muy inusual.

ABSTRACT Paragangliomas are rare neuroendocrine tumors that arise in the autonomic nervous system. Although these tumors are considered benign, they must be removed by surgery due to their potential malig nant transformation. Mesenteric paragangliomas are extremely rare.

Malignant glomus tumor of the index finger

Glomus tumor (GT) is a benign mesenchymal tumor with an estimated incidence of 1.5 to 2% of soft tissue tumors. The majority of glomus tumors are benign and are mostly seen in the superficial skin & soft tissue of upper and lower distal extremity. The malignant variant of the glomus tumor is scarce. We report a case of a recurrent glomus tumor diagnosed in a 28-year-old male patient, who complained of painful swelling in the proximal phalanx of the right index finger. The magnetic resonance imaging of the hand revealed a well-defined multilobulated soft tissue mass at the palmar aspect of the 2nd digit along the shaft of the proximal phalanx. Histopathology revealed a well-circumscribed tumor arranged in solid sheets, nests and cords interconnect by vessels of varying size. The tumor cells were round to oval, showed moderate nuclear pleomorphism, eosinophilic cytoplasm, atypical mitoses (>5/10HPF), and necrosis. Immunohistochemically tumor cells reveal diffuse and strong cytoplasmic positivity with smooth muscle actin (SMA). Based on histomorphology and immunohistochemistry, a final diagnosis of malignant glomus tumor was made. We report this case due to its rarity, and it to be included among the differential if the lesion is painful and recurrent.

Jugulotympanic Paraganglioma, Mimicking a Vascular Tumor: A Brief Case Report

Jugulotympanic paragangliomas (JTPs) known as glomus tumors, are neoplasms of variable invasiveness that arise from the paraganglia situated around the jugular bulb or middle ear. We now report a rare case of JTP in an 18-year-old male. Preoperative diagnoses through external auditory canal biopsy and radiologic examination both failed. Even using a frozen section, an informative finding was not obtained because mostly granulation tissue was present along with associated squeezing artifacts. On permanent histologic examination, small cell nests between many ectatic small vessels and fibrotic stroma were seen, and those cells were positive for CD56, synaptophysin and chromogranin. Because JTPs are rare and have rather different histologic findings - higher vascularity, smaller and less uniform tumor cells than other paragangliomas - they are easy to misdiagnose. However, remembering those differences may help the physician avoid missing JTPs.

Jugulotympanic Paraganglioma, Mimicking a Vascular Tumor: A Brief Case Report

Jugulotympanic paragangliomas (JTPs) known as glomus tumors, are neoplasms of variable invasiveness that arise from the paraganglia situated around the jugular bulb or middle ear. We now report a rare case of JTP in an 18-year-old male. Preoperative diagnoses through external auditory canal biopsy and radiologic examination both failed. Even using a frozen section, an informative finding was not obtained because mostly granulation tissue was present along with associated squeezing artifacts. On permanent histologic examination, small cell nests between many ectatic small vessels and fibrotic stroma were seen, and those cells were positive for CD56, synaptophysin and chromogranin. Because JTPs are rare and have rather different histologic findings - higher vascularity, smaller and less uniform tumor cells than other paragangliomas - they are easy to misdiagnose. However, remembering those differences may help the physician avoid missing JTPs.

Functional Paraganglioma of the Pelvic Cavity / 대한비뇨기과학회지

Paraganglioma is one of the pheochromocytomas, and this arises in the extra-adrenal tissue. It is a rare tumor of neural crest origin; it accounts for at least 10% of all the pheochromocytomas. Paragangliomas produce catecholamines and on the basis of this, they are classed as either functional or nonfunctional. We report here on our experience with laparoscopic removal of functional paragangliomas of the pelvic cavity and we include a brief review of literatures.