Additional pediatric resources: GeneralPediatrics.com | PediatricEducation.org | SearchingPediatrics.com
Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
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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