title: Clonal chromosome abnormalities in enchondromas and chondrosarcomas.
abstract: We report cytogenetic findings in short-term cell cultures from five enchondromas and four chondrosarcomas. Clonal chromosome aberrations were found in one case of enchondroma, and in all cases of chondrosarcoma. The only enchondroma with nonrandom abnormalities had a reciprocal t(8;17)(q23;p13), and monosomies 9, 19, and/or 22. In contrast to the few karyotypic findings in one of five enchondromas, the four chondrosarcomas were commonly characterized by cytogenetic heterogeneity, with a tendency for increasing karyotypic complexity in higher grade tumors. Two cases, one grade III and one metastasizing grade II chondrosarcoma, revealed hypodiploid stem- and sidelines with loss of chromosomes 6, 10, 13, 14, and 22, as common chromosomal abnormalities, suggesting a distinct karyotypic pattern in a subset of biologically aggressive chondrosarcomas.
authors.affiliation: Institute of Pathology, Medical School of the Technical University, Aachen, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Gunawan
authors.forename: M
authors.initials: M
authors.lastname: Weber
authors.forename: F
authors.initials: F
authors.lastname: Bergmann
authors.forename: J
authors.initials: J
authors.lastname: Wildberger
authors.forename: F U
authors.initials: FU
authors.lastname: Niethard
authors.forename: L
authors.initials: L
authors.lastname: Füzesi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002812:Chondroma / Q000235:genetics* / Q000473:pathology; D002813:Chondrosarcoma / Q000235:genetics* / Q000473:pathology; D002869:Chromosome Aberrations; D002871:Chromosome Banding; D025063:Chromosome Disorders; D002999:Clone Cells; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D014178:Translocation, Genetic; D014407:Tumor Cells, Cultured