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