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KMID : 0387919940050010061
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Korean Journal of Cytopathology
1994 Volume.5 No. 1 p.61 ~ p.64
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Fine Needle Aspiration Cytology of Chondroblastoma Arising in the Rib
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Abstract
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Chondroblastoma is a benign bone tumor accounting for less than 1% of bone tumor. It infrequently involves the flat bones, among which ribs are particularly rare. On fine needle aspiration cytology, the diagnostic smear consists of
chondroblasts,
osteoclastlike giant cells, and chondroid matrix. The cytologic hallmark to differentiate from other giant cell-containing lesions is chondroblasts.
We experienced a case of chondroblastoma in a 13-year-old female. Fine needle aspiration cytology from the 5th rib revealed dispersed chondroblasts and osteoclast-like giant cells on hemorrhagic background, Chondroblasts had round to oval
nuclei
with fine, evenly distributed chromatin and distinctive grooves or indentation. Their cytoplasm was well-defined.
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