A Case of Pulmonary Carcinoid Suspected of Sclerosing Hemangioma by Bronchial Arteriography

Abstract

A 58-year-old man was referred to our hospital because of an abnormal shadow on chest X-ray film. Chest CT scans revealed a markedly enhanced round lesion adjacent to the pulmonary artery in left S^6. A pulmonary aneurysm was suspected, but pulmonary arteriography showed no abnormality. As bronchial arteriography revealed a vascular network like the peel of a mask melon, sclerosing hemangioma was suspected. Intraoperative diagnosis of the frozen section revealed a malignant tumor and left lower lobectomy was performed. Pathologically, the tumor was a typical carcinoid. Both sclerosing hemangioma and carcinoid appear as round tumors with distinct borders and have similar findings on bronchial arteriography. Differential diagnosis by imaging of these two diseases can be very difficult.