title: A case report of synovial sarcoma with translocation (X;18). Application of fluorescence in situ hybridization to paraffin-embedded tissue.
abstract: A 57-year-old female patient with synovial sarcoma in her right foot had a chromosome abnormality defined as translocation (X;18). The tumour was located in the subcutis, and histological investigation showed monophasic proliferation of oval to spindle-shaped cells with a fascicular arrangement lacking an epithelial component. Immunostaining disclosed no cytokeratin or epithelial membrane antigen in tumour cells. Karyotypic analysis revealed translocation (X;18) in addition to other nonspecific aberrations. Fluorescence in situ hybridization was carried out on paraffin-embedded tissue, using DNA probes for the centromeres of chromosomes X and 18 with whole chromosome painting probes for X and 18. The free nuclei showed two signals at a rate of 83-85% with the X and 18 centromeric probes, in contrast to three signals at a rate of 68-70% with the X and 18 painting probes.
authors.affiliation: Department of Pathology, Faculty of Medicine, Tottori University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nagao
authors.forename: Y
authors.initials: Y
authors.lastname: Gomyo
authors.forename: H
authors.initials: H
authors.lastname: Ito
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto
authors.forename: H
authors.initials: H
authors.lastname: Yoshida
mesh_terms: D002887:Chromosomes, Human, Pair 18; D015342:DNA Probes; D005260:Female; D005534:Foot Diseases / Q000235:genetics* / Q000473:pathology; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D008875:Middle Aged; D016612:Paraffin Embedding; D013584:Sarcoma, Synovial / Q000235:genetics* / Q000473:pathology; D014178:Translocation, Genetic; D014960:X Chromosome
chemical_list: D015342:DNA Probes