Submitted soft tissues and bony fragments show dense infiltration by neutrophils, lymphocytes, plasma cells and macrophages as well as few multinucleated foreign body giant cells. with related capillary proliferation. No evidence of specific granulomas. No evidence of malignancy.
Distal femur biopsy.
Soft tissue and bone fragments collectively measured 5x4.5x1.7 cm, totally embedded.
Distal femur lesion, biopsy: