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.
Rt. ankle effusion, suspected of septic arthritis.
Soft tissue fragments collectively measured 2.3x2x1 cm, totally embedded.
Rt. ankle synovectomy: