-2 :: Case - 3301 :: - Osteoblastoma
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PLAIN FILM:
Expansile lytic lesion at right pedicle of L2. There is alsom a 9.5 degree levoconvex lumbar scoliosis as measured from the superior endplate of L2 to the inferior endplate of L4.

CT:
Nonagressive expansile lytic process at right pedicle of L2 involving the transverse process, posterior spinous process and pars interarticularis. Lesion has intact cortical margins and a few septations. Lesion expands the inner cortical margin into the spinal canal.

1. Osteoblastoma
2. Aneurysmal bone cyst

Osteoblastoma