system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
X Ray shows lytic lesion in calceneus in young adult. Biopsy shows following diagnosis
assistant
The correct answer is  Ans. (a) Pigmented viilonodular synovitisImage shows hyperplasia of synomin along with hemosiderin laden macrophages and giant cells s/o Pigmented viilonodular synovitis.