title: Biphasic synovial sarcoma of the peritoneal cavity with t(X;18) demonstrated by reverse transcriptase polymerase chain reaction.
abstract: A case of a biphasic synovial sarcoma, arising on the inner surface of the anterior abdominal wall of a 13-year-old girl, is reported. Although the tumor showed rather typical histological and immunohistochemical features for synovial sarcoma, its unusual clinical presentation and anatomical location caused diagnostic difficulty, especially with regard to differentiation from a malignant mesothelioma. Applying reverse transcriptase polymerase chain reaction (RT-PCR) analysis, the SYT-SSX2 chimeric gene transcripts that result from the translocation, t(X;18)(p11.2;q11.2), found in most synovial sarcomas could be demonstrated. Thus, this RT-PCR approach is a reliable method for confirming the diagnosis of synovial sarcomas in unusual locations.
authors.affiliation: Department of Pathology, Faculty of Medicine, University of Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kashima
authors.forename: H
authors.initials: H
authors.lastname: Matsushita
authors.forename: M
authors.initials: M
authors.lastname: Kuroda
authors.forename: H
authors.initials: H
authors.lastname: Takeuchi
authors.forename: H
authors.initials: H
authors.lastname: Udagawa
authors.forename: T
authors.initials: T
authors.lastname: Ishida
authors.forename: M
authors.initials: M
authors.lastname: Hara
authors.forename: R
authors.initials: R
authors.lastname: Machinami
mesh_terms: D000293:Adolescent; D014408:Biomarkers, Tumor / Q000032:analysis; D002887:Chromosomes, Human, Pair 18; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D017404:In Situ Hybridization, Fluorescence; D008854:Microscopy, Electron; D010534:Peritoneal Neoplasms / Q000737:chemistry / Q000000981:diagnostic imaging / Q000235:genetics* / Q000473:pathology* / Q000648:ultrastructure; D016133:Polymerase Chain Reaction; D013584:Sarcoma, Synovial / Q000737:chemistry / Q000000981:diagnostic imaging / Q000235:genetics* / Q000473:pathology* / Q000648:ultrastructure; D014057:Tomography, X-Ray Computed; D014178:Translocation, Genetic; D014960:X Chromosome
chemical_list: D014408:Biomarkers, Tumor