Primary pulmonary epithelioid angiosarcoma: A case report and literature review.

Primary pulmonary epithelioid angiosarcoma is an extremely rare malignancy. Herein, we report the case of an elderly Chinese patient with primary pulmonary epithelioid angiosarcoma. The 72-year-old man presented with a 1-month history of persistent hemoptysis and left chest pain and weight loss of 3 kg. A chest computed tomography (CT) scan revealed two masses (maximum size 3.0 cm × 2.0 cm and 0.8 cm × 0.5 cm) in right lower lobe. We performed a left thoracotomy for tumor resection. Pathological examination showed that there was a significant amount of hemorrhage, fibrinous exudates, degeneration, and necrosis. With immunohistochemical analysis, tumor cells had strong expression of CD34, FLI-1, vimentin. Morphological and immunohistochemical findings supported the diagnosis of epithelioid angiosarcoma.