School ager with back pain

Radiograph of acute lymphoblastic leukemia in the spine
Lateral radiographs at presentation of the thoracic (left) and lumbar (middle) spine show diffuse osteopenia and loss of vertebral body height throughout the spine while lateral radiograph obtained a decade later of the lumbar spine (right) shows a faint bone within bone appearance of the vertebral bodies.

The diagnosis was acute lymphoblastic leukemia.