A 12 year old boy was suffering from pain in his left arm. Pain was initially mild in nature but intensity was increasing day by day. Pain was aggravated on movement and relieved by taking medication (aspirin). There was mild diffuse swelling and tenderness of mid left arm on anteroom-medial aspect. Elbow movement was restricted. He was treated initially with painkillers.

On X-ray there was an osteolytic lesion over mid-arm. Provisional diagnosed was Osteoid Osteoma with Differentials like Brodies abscess, Fibrous cortical defect, Fibrous Dysplasia, Simple bone cyst (SBC).

He was scheduled for surgery after preanesthetic evaluation. Excision & curettage was done under fluoroscopic guidance. Tissue was sent for histopathological examination.