Orthopaedics A 20 year old young patient has sclerotic lesion at diaphysis, most likely diagnosis A Osteosarcoma B Ewing's sarcoma C Osteoid osteoma D Osteochondroma 💡 Explanation A 20 year old young patient has sclerotic lesion at diaphysis, most likely diagnosis ✓ Correct Answer: C. Osteoid osteoma