School ager with back pain

Plain film and CT and bone scan of osteoid osteoma of the spine
AP radiograph of the thoracic spine (left upper) shows a mild curvature of the spine convex right and the left pedicle of the T12 vertebral body is difficult to visualize. Axial CT without contrast of the T12 vertebral body (right upper) shows a lesion with a lucent nidus surrounded by a sclerotic rim in the left pedicle of the T12 vertebral body. Pinhole (left lower) and whole body (right lower) images from a nuclear medicine bone scan show focally increased radiotracer localization in the left pedicle of the T12 vertebral body and a curvature of the spine convex right.

The diagnosis was painful scoliosis secondary to an osteoid osteoma in the left pedicle of the T12 vertebral body.