RESUMO
@#Oncocytic carcinoma of the salivary gland is an uncommon tumour in the head and neck region. Owing to its rarity, identifying the histopathological features of a malignant tumour can be difficult and challenging. We report a case of a 70-year-old man who presented with a left facial weakness for six months in a background history of left parotid swelling over the past 10 years. Clinical examination revealed a 3x3cm left parotid mass and grade 4 facial nerve palsy. Fine needle aspiration of the mass showed scattered cohesive, monolayered sheets of uniform oncocytic cells. Subsequently, a left total parotidectomy and selective neck dissection were performed. Histological examination showed sheets of small oncocytes with minimal nuclear atypia. Evidence of nerve entrapment, capsular invasion and perivascular permeation were identified in focal areas. Thus, a final diagnosis of oncocytic carcinoma was rendered.
RESUMO
El oncocitoma suprarrenal es un tumor extremadamente infrecuente, con apenas unos 150 casos descriptos. Paciente de sexo masculino, de 48 años, con adrenalectomía derecha por incidentaloma suprarrenal de 7 cm, no funcionante. El oncocitoma suprarrenal no puede distinguirse desde el punto de vista clínico-imagenológico de otros tumores adrenales más frecuentes, por lo que su confirmación es histológica. Rara vez son malignos, y el tratamiento aceptado es la suprarrenalectomía, idealmente por vía laparoscópica. En nuestro caso, la presencia de dos criterios histológicos menores lo clasifican como un tumor con potencial maligno.
Oncocytic adrenocortical carcinoma is an extremely rare tumor, with only 150 cases reported in the literature. A 48-year-old male patient, with right adrenalectomy due to a 7-cm non-functional adrenal incidentaloma. From a clinical imaging point of view, oncocytic adrenocortical carcinoma cannot be distinguished from other more common adrenal tumors; therefore, the diagnostic confirmation is histological. It is rarely malignant, and the accepted treatment is laparoscopic adrenalectomy. In our case, two minor histological criteria classify it as a potentially malignant tumor.