A 19 yrs old male has a small circumscribed sclerotic swelling over diaphysis of femur, likely diagnosis is:
Sclerotic lesion over diaphysis of a long bone in a young patient indicative of osteoid osteoma. Ref: Essential Ohopedics By Maheshwari 2nd Edition, Page 213
Osteoclastoma
Osteosarcoma
Ewing's sarcoma
Osteoid osteoma