aneurysmal bone cyst

"ABC"

10 - 30 yrs, 75% before skeletal maturity
sites: long bones; also, flat bones

Findings:

metaphyseal if unfused, metaepiphyseal after fusion
lytic, expansile
thin, continuous rim
thin internal bony strands

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© 2002, C.E. Kahn, Jr.
2002-04-18