Osteochondroma of the fifth rib resulting in recurrent hemothorax.

A 48-year-old man presented with recurrent spontaneous hemothoraces, which ultimately were found to be secondary to a pedunculated costal osteochondroma causing vascular injury. After initially undergoing endovascular coil embolization, he ultimately required segmental rib resection containing the offending lesion for definite treatment. Although a few cases of symptomatic costal osteochondromas have been reported in the literature, as far as we know, no previous reports have provided direct radiologic confirmation of active bleeding or the role of angiographic intervention. In this report, we highlight the importance of CT angiography in establishing a direct link between an osteochondroma and recurrent hemothorax. We also discuss the diagnostic imaging challenges associated with this condition and the use of a multidisciplinary treatment strategy involving both angiographic and operative management.