title: Cytogenetic analysis of adamantinoma of long bones: further indications for a common histogenesis with osteofibrous dysplasia.
abstract: Five adamantinomas of long bones were cytogenetically characterized to investigate the role of chromosomal aberrations in their histogenesis, as well as a putative relationship between adamantinoma and osteofibrous dysplasia (OFD). Three tumors had a classic histologic subtype, with abundant epithelium. Two of them revealed trisomies 7, 8, 12, and 19, combined with a balanced translocation, t(10;12), with centromere breakpoints in one tumor. The third showed a karyotype 51,XY, +X, +7, +12, +19, +21. The fourth tumor, of OFD-like subtype, showed trisomies 7, 8, and a small marker chromosome in a low percentage of cells. The fifth tumor, also of OFD-like subtype, displayed only a few keratin-positive cells from the multiple tissue blocks investigated. This latter tumor revealed a clonal abnormality with a karyotype 46,XX,t(2;11)(p23;q14)inv(11)(p14q14), which was confirmed with fluorescence in situ hybridization (FISH), using chromosome-specific library probes and chromosome 11 locus-specific probes. The trisomies 7, 8, and 12 also were described in OFD, which suggests a common histogenesis of OFD and adamantinoma. Our findings further support the probability of clonal origin of OFD. The OFD-like component may be an integral element of adamantinoma, rather than a tissue reaction to epithelial tumor cells.
authors.affiliation: Department of Pathology, Leiden University, The Netherlands.
authors.forename: H M
authors.initials: HM
authors.lastname: Hazelbag
authors.forename: J W
authors.initials: JW
authors.lastname: Wessels
authors.forename: P
authors.initials: P
authors.lastname: Mollevangers
authors.forename: E
authors.initials: E
authors.lastname: van den Berg
authors.forename: W M
authors.initials: WM
authors.lastname: Molenaar
authors.forename: P C
authors.initials: PC
authors.lastname: Hogendoorn
mesh_terms: D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000235:genetics* / Q000473:pathology; D002675:Child, Preschool; D002869:Chromosome Aberrations; D002871:Chromosome Banding; D005260:Female; D005357:Fibrous Dysplasia of Bone / Q000235:genetics* / Q000473:pathology; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D008297:Male; D009375:Neoplasms, Glandular and Epithelial / Q000235:genetics* / Q000473:pathology; D014178:Translocation, Genetic; D014314:Trisomy