Figure 2From: Intraosseous angiosarcoma with secondary aneurysmal bone cysts presenting as an elusive diagnostic challengeHistological section from the initial resected distal femur demonstrating cystic spaces that are lined by fibrous septa that contain areas of haemosiderin deposition and recent haemorrhage. Features were consistent with haemorrhagic aneurysmal bone cyst. No evidence of malignancy seen. (Haematoxylin and eosin staining, 10× magnification).Back to article page