Intraosseous Angiolipoma of the Rib.

Angiolipomas are a subgroup of lipomas and are rarely observed benign tumours in which mature fat tissue and angiomatous elements exist jointly. Costa-induced angiolipomas are rarer. A male patient aged 46 years consulted our clinic due to severe pain in his left side. The patient's X-ray showed a lobulated area with increased density (bone mass) in the left upper zone of the lung. A lesion in the fourth rib was excised with a left thoracotomy. Pathological diagnosis was reported as angiolipoma.