OSTEOID OSTEOMA- A CASE REPORT

ABSTRACT Osteoid osteoma is a bone forming benign tumour of osteoblast according to the WHO classification5, It consists of a radiolucent nidus surrounded by a radio dense bone. It is most common in diaphyseal region. We present a case of 30 years old male with co pain at the left thigh for the past 11 months which worsened during the night hours not associated with fever, not radiated to knee or leg, relieved on taking analgesics. On clinical examination, the patient had no clinical finding except a minimal muscle wasting on anterior compartment of the thigh. X- Ray of the left thigh AP and Lateral view were taken, which showed a radiolucent nidus surrounded by radio dense bone .This finding was confirmed with CT scan of the left thigh. Through the anterior approach the tumour site was exposed, tumour site was confirmed with the C-Arm, the cortex over the nidus was drilled around the margins of the tumour. The drilled cortex removed by Deroofing2. Then the tumour was curetted out. The margins and the base were thoroughly curetted. Removal of the nidus confirmed with C-arm intraoperatively.Post operatively, X- ray of thigh AP and lateral view were taken which confirmed the complete curettage of the tumour. Biopsy of the specimen showed histological picture of osteoid osteoma.Post operatively the patient completely relieved of the symptoms. The patient followed up at 10 weeks later. That time patient resumed his duty as an office assistant. He had no pain at the left thigh. This time the X ray CT scan showed no recurrence, no pathological fracture, with minimal callus formation and remodelling at the site.