CHONDROSARCOMA OF FEMUR AND ILIUM
A 16 year old boy presents with haemoptysis and dyspnoea. A chest x-ray shows multiple rounded lesions throughout both lung fields.
The specimen consists of the upper end of the right femur and its articulation with the ilium and associated soft tissues. The neck of the femur and most of the ilial bone is replaced by greyish, dark tumour which in parts is nodular and is poorly defined. This tissue appears to erode into the normal femur. The tumour has spread beyond bony tissue into the adjacent soft tissue.
The criteria of malignancy, namely, infiltration, necrosis and haemorrhage.