Pathology X Ray shows lytic lesion in calceneus in young adult. Biopsy shows following diagnosis A Pigmented viilonodular synovitis B Ochronosis C Osteomylitis D Eumycosis π‘ Explanation X Ray shows lytic lesion in calceneus in young adult. Biopsy shows following diagnosis β Correct Answer: A. Pigmented viilonodular synovitis