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Virtual Pediatric Hospital: Paediapaedia: Osteoblastoma Paediapaedia: Musculoskeletal Diseases

Osteoblastoma

Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed


Clinical Presentation:
Neck or back pain not relieved by aspirin, localized tenderness, any scoliosis with muscle spasm.

Etiology/Pathophysiology:
Benign tumor histologically identical to osteoid osteoma, but larger in size. Fifty percent of cases are in the spine's pedicles.

Pathology:
Not applicable

Imaging Findings:
Plain film shows an expansile osteolytic lesion surrounded by thin peripheral rim of bone, 48% have a calcified central nidus, 50% excite a limited sclerotic reaction in adjacent structures, and 33% involve at least some part of a vertebral body.

Bone scan shows increased uptake.

CT shows a lucent lesion with a peripheral shell of bone and a calcified nidus.

DDX:

References:
See References Chapter.

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