Babu a 19-year-old male has a small circumscribed sclerotic swelling over diaphysis of femur; likely diagnosis is:: (A) Osteoclastoma, (B) Osteosarcoma, (C) Ewing's sarcoma, (D) Osteoid osteoma
Answer is D. (d) Osteoid osteoma- Well circumscribed sclerotic swelling over diaphysis of a long bone (femur) in a 19 years old suggests the diagnosis of osteoid osteoma.