Fragments of extensively ulcerated synovial lining with dense infiltration by neutrophils, lymphocytes, plasma cells and macrophages with vascular endothelial proliferation and macrophages. No evidence of specific granulomas. No evidence of atypia or malignancy.
Lt. ankle septic arthritis.
Soft tissue fragments collectively measured 1.7x1.5x0.8 cm, totally embedded.
Lt. Ankle Synovium, biopsy: