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CHROMOSOMAL REARRANGEMENT t(11;22) IN EXTRASKELETAL EWING'S SARCOMA AND PRIMITIVE NEUROECTODERMAL TUMOUR ANALYSED BY FLUORESCENCE IN SITU HYBRIDIZATION USING PARAFFIN‐EMBEDDED TISSUE
Author(s) -
NAGAO KATSUHITO,
ITO HISAO,
YOSHIDA HARUHIKO,
MINAMIZAKI TAKESHI,
FURUSE KIYOO,
YOSHIKAWA TAKASHI,
USHIGOME SHINICHIRO
Publication year - 1997
Publication title -
the journal of pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.964
H-Index - 184
eISSN - 1096-9896
pISSN - 0022-3417
DOI - 10.1002/(sici)1096-9896(199701)181:1<62::aid-path687>3.0.co;2-p
Subject(s) - sarcoma , ewing's sarcoma , biology , primitive neuroectodermal tumor , fluorescence in situ hybridization , pathology , chromosomal translocation , neuroectodermal tumor , karyotype , cytogenetics , chromosome 22 , immunohistochemistry , in situ hybridization , chromosome , medicine , genetics , gene expression , gene , immunology
The clonal chromosomal rearrangement t(11;22) has been reported by karyotypic analysis to be specific for Ewing's sarcoma of bone and soft tissue origin as well as primitive neuroectodermal tumour. In this report, immunohistological analysis of MIC 2 expression and fluorescence in situ hybridization (FISH) were performed using paraffin‐embedded tissues. We examined t(11;22) in the nuclei isolated from two Ewing's sarcomas, four primitive neuroectodermal tumours, and three neuroblastomas, which served as negative controls by FISH with an α‐satellite DNA probe for chromosome 11, a chromosome 22 marker probe, and whole chromosome painting probes for both chromosomes 11 and 22. Both cases of Ewing's sarcoma and the four primitive neuroectodermal tumour specimens were immunoreactive for MIC 2. Both Ewing's sarcomas and three of the four primitive neuroectodermal tumours contained the tumour‐specific t(11;22), but the three neuroblastomas did not show this translocation. Based on the cytogenetic results and on the immunohistological investigation of MIC 2 expression, Ewing's sarcoma is suggested to be related closely to primitive neuroectodermal tumour. FISH is a useful aid in determining the tumour type of Ewing's sarcoma and putative related tumours. © 1997 by John Wiley & Sons, Ltd.