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WHO Classification of Tumours
Periosteal chondroma


Juxtacortical (periosteal) chondroma is a benign neoplasm that occurs most commonly in the long bones and is composed of hyaline cartilage arising from the periosteum. Juxtacortical chondromas form well-marginated bone surface tumours enclosed by solid periosteal buttressing. The underlying cortex is typically indented and thickened
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Fletcher CDM, Unni KK, Mertens F (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
3rd Edition
IARC Press: Lyon 2002

Juxtacortical chondromas occur in all age groups with equal sex distribution. Surgical removal is usually curative, the recurrence rate is low.