Head and neck hemangiopericytoma in a child: case report.

CONTEXT: Hemangiopericytoma is a relatively rare tumor, first described in 1942, with approximately 300 cases described in the literature to date. In most cases, it affects the trunk and lower extremities. The head and neck incidence is less than 20%, mostly in adults. We describe a case of malignant head and neck hemangiopericytoma in a child. TYPE OF STUDY: Case report. CASE REPORT: A twelve-year-old male patient noted the presence of a firm painless right-side retroauricular lymph node of 1 cm in diameter, which at first remained unchanged for six months, but subsequently enlarged progressively. He denied having had previous trauma at that site. In November 2000, he presented nasal obstruction and voluminous epistaxis that required hospitalization and blood transfusion. During dental treatment one month later, a cranial x-ray revealed bone alterations. A subsequent computed tomography scan showed an extensive lesion of soft tissue density that had invaded the maxillary fossa, eroding the skull base and middle and nasal fossa. The child was then referred to our service, where biopsy was performed, giving a diagnosis of hemangiopericytoma. Shortly afterwards, magnetic resonance imaging revealed that this lesion had undergone significant growth, while maintaining the same invasion pattern. The patient was submitted to conservative surgery in April 2001, with only partial resection of the tumor because of its extent. Histopathological examination of the specimen confirmed the presence of malignant hemangiopericytoma. Following the surgery, the patient presented fast regrowth of the lesion, with partial response to chemotherapy and radiotherapy.

Localization of ectopic and supernumerary parathyroid glands in patients with secondary and tertiary hyperparathyroidism: surgical description and correlation with preoperative ultrasonography and Tc99m-Sestamibi scintigraphy.

INTRODUCTION: Hyperparathyroidism is an expected metabolic consequence of chronic kidney disease (CKD). Ectopic and/or supernumerary parathyroid glands (PT) may be the cause of surgical failure in patients undergoing total parathyroidectomy (PTX). AIM: To define the locations of ectopic and supernumerary PT in patients with renal hyperparathyroidism and to correlate intraoperative findings with preoperative tests. MATERIALS AND METHODS: A retrospective study was conducted with 166 patients submitted to PTX. The location of PT during surgery was recorded and classified as eutopic or ectopic. The preoperative localizations of PT found by ultrasonography (USG) and Tc99m-Sestamibi scintigraphy (MIBI) were subsequently compared with intraoperative findings. RESULTS: In the 166 patients studied, 664 PT were found. Five-hundred-seventy-seven (86.4%) glands were classified as eutopic and 91(13.6%) as ectopic. Eight supernumerary PT were found. The most common sites of ectopic PT were in the retroesophageal and thymic regions. Taken together, USG and MIBI did not identify 56 (61.5%) ectopic glands. MIBI was positive for 69,7% of all ectopic glands located in the mediastinal and thymic regions. CONCLUSION: The presence of ectopic and supernumerary PT in patients with renal hyperparathyroidism is significant. Although preoperative imaging tests did not locate most of ectopic glands, MIBI may be important for identifying ectopic PT in the mediastinal and thymic regions.

Localizacao de glandulas paratireoides ectopicas e supranumerarias em pacientes com hiperparatireoidismo secundario e terciario: descricao cirurgica e correlacao com ultrassonografia e cintilografia Tc99m-Sestamibi pre-operatorios / Localization of ectopic and supernumerary parathyroid glands in patients with secondary and tertiary hyperparathyroidism: surgical description and correlation with preoperative ultrasonography and Tc99m-Sestamibi scintigraphy

Introdução: O hiperparatireoidismo é uma consequência metabólica esperada na doença renal crônica (DRC). Paratireoides (PT) ectópicas e/ou supranumerárias podem ser causa de falha cirúrgica nos pacientes submetidos à paratireoidectomia total (PTX). Objetivo: Definir cirurgicamente a localização das PT, em pacientes com hiperparatireoidismo associado à DRC, e correlacionar esses achados com os exames pré-operatórios. Materiais e métodos: Foi conduzido um estudo retrospectivo com 166 pacientes submetidos à PTX. A localização das PT no intraoperatório foi registrada, sendo classificada como tópica ou ectópica. A localização pré-operatória, definida pela ultrassonografia (USG) e pela cintilografia Tc99m-Sestamibi (MIBI), foi comparada com aos achados cirúrgicos. Resultados: Nos 166 pacientes, foram identificadas 664 PT. Foram classificadas como tópicas e ectópicas 577 (86,4%) e 91(13,6%) glândulas, respectivamente. Oito PT supranumerárias foram encontradas (7 tópicas e 1 ectópica). As localizações mais comuns de PT ectópicas foram as regiões retroesofágica e tímica. Associadas, a USG e a MIBI não identificaram 56 glândulas (61,5%) ectópicas. Entretanto, a MIBI foi positiva para 69,7% daquelas localizadas nas regiões tímicas e mediastinal. Conclusão: A presença de glândulas ectópicas e supranumerárias em pacientes com hiperparatireoidismo associado à DRC é significativa. Os exames de imagem pré-operatórios não localizaram a maioria das glândulas ectópicas. A MIBI pode ter importância na identificação de PT nas regiões tímica e mediastinal. .

Introduction: Hyperparathyroidism is an expected metabolic consequence of chronic kidney disease (CKD). Ectopic and/or supernumerary parathyroid glands (PT) may be the cause of surgical failure in patients undergoing total parathyroidectomy (PTX). Aim: To define the locations of ectopic and supernumerary PT in patients with renal hyperparathyroidism and to correlate intraoperative findings with preoperative tests. Materials and methods: A retrospective study was conducted with 166 patients submitted to PTX. The location of PT during surgery was recorded and classified as eutopic or ectopic. The preoperative localizations of PT found by ultrasonography (USG) and Tc99m-Sestamibi scintigraphy (MIBI) were subsequently compared with intraoperative findings. Results: In the 166 patients studied, 664 PT were found. Five-hundred-seventy-seven (86.4%) glands were classified as eutopic and 91(13.6%) as ectopic. Eight supernumerary PT were found. The most common sites of ectopic PT were in the retroesophageal and thymic regions. Taken together, USG and MIBI did not identify 56 (61.5%) ectopic glands. MIBI was positive for 69,7% of all ectopic glands located in the mediastinal and thymic regions. Conclusion: The presence of ectopic and supernumerary PT in patients with renal hyperparathyroidism is significant. Although preoperative imaging tests did not locate most of ectopic glands, MIBI may be important for identifying ectopic PT in the mediastinal and thymic regions. .

Neoplasias de Glândulas Salivares: análise em 10 anos em uma única instituição / Salivary Gland Neoplasms: A ten years analysis in a single institution

Introdução: As neoplasias de glândulas salivares correspondem a cerca de 3% a 10% dos tumores em cabeça e pescoço, com incidência anual de 1/100.000 casos. A idade média é de 45 anos, no gênero feminino. Nas neoplasias benignas, a incidência anual é de 4,7%, mais da metade em glândulas salivares maiores e tipo mais comum o Adenoma Pleomórfico. As neoplasias malignas tem incidência anual de 0,9%, gênero masculino e Carcinoma Mucoepidermóide em glândulas parótidas. Objetivo: Determinar as características demográficas, clínicas e histológicas dos pacientes tratados por neoplasias de glândulas salivares na UNIFESP retrospectivamente no período de 10 anos. Material e Métodos: Análise retrospectiva dos prontuários de pacientes tratados por neoplasias de glândulas salivares no Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço da Universidade Federal de São Paulo-UNIFESP, no período de 10 anos (2002 a 2012). Para análise descritiva utilizou-se o Microsoft Excel 2011 e teste t-student com significância p<0,05. Resultados: As mulheres compreenderam 55%, maioria entre as neoplasias malignas (60%) e benignas (85%), idade média de 52 anos. Sintoma inicial de dor: 62,5% das malignas e 18,9% das benignas. Tempo médio de apresentação de 4,6 anos para as malignas e 2,7 anos para as benignas, diagnóstico com a punção em 89,4%. Ambas neoplasias acometeram a glândula parótida (81,9%). O Carcinoma Mucoepidermóide e o Adenoma Pleomórfico foram os mais comuns. Complicações ocorreram em 23,4%: paralisia facial periférica (13,8%) e hematomas (6,4%). Conclusões: Os dados epidemiológicos, a sensibilidade, especificidade e acurácia da punção concordam com a literatura. Maior incidência de neoplasias em parótida, mais comum o Carcinoma mucoepidermóide. A Parotidectomia com preservação do facial, com ou sem esvaziamento cervical foi a cirurgia mais comum realizada e maior incidência de metástases cervicais ocultas.

Introduction: The salivary gland neoplasms are about 3% to 10% of all head and neck tumors, with annual incidence of 1/100.000 habitants. The medium age of presentation is 45 years in the female. In the benign neoplasms, the annual incidence is 4,7%, more than half in the major salivary glands and the pleomorfic adenoma is the commonest subtype. The malignant neoplasms has 0,9% of annual incidence, being more common in the male and the Mucoepidermoid subtype in the parotid gland. Objective: To determine retrospectively the clinical, demographic and histopathological characteristics of a consecutive series of surgical treated patients due salivary gland neoplams in the UNIFESP in a ten years period. Material and Methods: Retrospective analisys from clinical data of treated patients due salivary gland neoplasms in the Otorhinolaryngology Head and Neck Surgery Department at Sao Paulo Federal University in a ten years period (2002-2012). The Microsoft excel was used to descriptive analisys with t-student with p<0,05 significance. Results: The female patients were 55% of all, even in the malignant neoplasms (60%) or in the benign ones (85%). The medium age was 52 years and the initial symptom was pain in 62,5% of the malignant and in the 18,9% in the benign neoplasms. The main time of duration of symptoms was 4,6 and 2,7 years for the malignant and benign neoplasms respectively. In 89,4% of patients the diagnosis was made by the aspirative biopsy. The parotid gland was majority in both malignant and benign histology (81,9%), the Mucoepidermoid carcinoma and the pleomorfic adenoma were the commonest histology. Complications occurred in 23,4% of the patients, divided in periferic facial paralysis (13,8%) and hematoma (6,4%). Conclusion: The epidemiological data, the sensivity, especificity and accuracy of aspirative biopsy agree with the current literature. The parotid was the principal gland with disease and the mucoepidermoid carcinoma the main malignant neoplasm. Parotidectomy with preservation of the facial nerve, followed by neck dissection was the commonest surgery and we found a higher incidence of occult lymph node metastasis.

Head and neck hemangiopericytoma in a child: case report

CONTEXTO: O hemangiopericitoma é uma neoplasia relativamente, descrita pela primeira vez em 1942, e com aproximadamente 300 casos descritos até hoje na literatura. Na maioria dos pacientes, acomete o tronco e membros inferiores, sendo a incidência em cabeça e pescoço menor que 20%, e principalmente em adultos. Relatamos um caso de hemangiopericitoma de cabeça e pescoço em criança. TIPO DE ESTUDO: Relato de caso. RELATO DO CASO: Paciente do sexo masculino, 12 anos, que, em dezembro de 1999, notou nódulo retroauricular à direita, endurecido, indolor e de 1 cm de diâmetro, que evoluiu estável por seis meses e com posterior crescimento progressivo. Negava história de trauma. Em novembro de 2000, apresentou obstrução nasal e epistaxe volumosa, necessitando de internação e transfusão sangüínea. Um mês depois, durante tratamento dentário, uma radiografia craniana evidenciou alterações ósseas. Tomografia computadorizada subseqüente mostrou lesão extensa característica de partes moles, invadindo fossa maxilares, destruindo base do crânio, fossa média e fossas nasais. A criança foi encaminhada ao nosso serviço, onde biópsia foi realizada, com diagnóstico de hemangiopericitoma. Logo após exame de ressonância nuclear magnética evidenciou a mesma lesão com aumento importante, mas invadindo as mesmas estruturas. Submetido à cirurgia conservadora em abril de 2001 com ressecção parcial do tumor devido à sua extensão. O exame histopatológico revelou hemangiopericitoma maligno. Após a cirurgia, o paciente apresentou rápido crescimento da massa tumoral e resposta parcial a quimioterapia e radioterapia.