[Sclerosing pneumocytoma: A rare and benign tumor]

Sclerosing pneumocytoma is a benign and rare lung tumor affecting epithelial cells. In most cases, patients are asymptomatic and the diagnosis is made on an X ray or a CT scan performed for other enquiry. Sex ratio favors women. Epidemiological studies report that middle-aged Asian women are more frequently affected. Radiological investigations find a solitary nodule or a mass with peripheric localization. When performed, histological analysis shows a tumor composed of at least two of the four following architectures: papillary, sclerosing, hemangiomatous and solid, with two types of cells that can be round or cubic cells.

We report two cases of multiple sclerosing pneumocytoma in two caucasien men. The first patient was asymptomatic, the second complain from moderate dyspnea. A wedge resection was performed in both, allowing diagnosis. Anatomopathology revealed respectively a predominant sclerosing and solid architecture and a sclerosing and papillary architecture. There was no progression of the other concomitant nodules after three years follow-up.

Pneumocytoma is a benign, slow-growing tumor with good prognosis.