The aim of this work was to study the immunohistochemical expression of androgen receptor, estrogen receptor and progesterone receptor in pleomorphic adenomas, Warthin's tumors, mucoepidermoid carcinomas and adenoid cystic carcinomas of salivary glands. A total of 41 pleomorphic adenomas, 30 Warthin's tumors, 30 mucoepidermoid carcinomas and 30 adenoid cystic carcinomas were analyzed, and the immunohistochemical expression of these hormone receptors were assessed. It was observed that all cases were negative for estrogen and progesterone receptors. Androgen receptor was positive in 2 cases each of pleomorphic adenoma, mucoepidermoid carcinoma and adenoid cystic carcinoma. In conclusion, the results do not support a role of estrogen and progesterone in the tumorigenesis of pleomorphic adenomas, Warthin's tumors, mucoepidermoid carcinomas and adenoid cystic carcinomas. However, androgen receptors can play a role in a small set of salivary gland tumors, and this would deserve further studies.

Doença de Castleman é uma doença rara que se manifesta geralmente como nódulo mediastinal, com grande variabilidade de apresentação em relação a idade, manifestações clínicas e evolução. Descreve-se paciente do sexo feminino de 40 anos de idade, com dor torácica incaracterística há alguns anos, com imagem hipotransparente à direita em raio X de tórax. A tomografia computadorizada e a arteriografia pulmonar não elucidaram o diagnóstico. O mesmo só foi possível ao exame anatomopatológico após ressecção cirúrgica do nódulo, que evidenciou características de hiperplasia angiofolicular ou doença de Castleman. O artigo ressalta a importância de se acrescentar esta doença na lista de morbidades para diagnóstico diferencial em nódulos pulmonares solitários.

Castleman disease is a rare disorder generally characterized by a mediastinal nodule, with a great variety of alternative presentations regarding age, clinical manifestations and evolution. This case report describes a 40-year-old female patient presenting with uncharacteristic chest pain for a few years. A chest X-ray revealed a hypotransparency on the right side. Computed tomography and pulmonary arteriography did not elucidate the diagnosis, which was made through surgical resection and anatomopathological examination of the nodule, which presented characteristics of angiofollicular hyperplasia, or Castleman disease. This article emphasizes the importance of adding this disease to the list of morbidities in the differential diagnosis of pulmonary solitary nodules.