Solitary fibrous tumors of the pleura.

Two cases of female patients with solitary fibrous tumor of the pleura are described. Chest radiography and computed tomography showed the presence of a giant mass with inhomogeneous density in the hemithorax in both cases. Transthoracic needle biopsy of the masses showed benign fibrous tissue. Both patients underwent thoracotomy. The tumors arose from the visceral pleura, were peduncular, appeared well-circumscribed with exterior surface smooth, firm and multinodular. The size of tumors were 16x11x6 cm and 15x11x4.5 cm, weighed 650 g and 573 g and both were successfully resected. The pathological diagnosis was benign solitary fibrous tumor of the pleura. Seven years after the operations the clinical condition and chest radiography are normal in both women.