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Reciprocal translocation t(12;22)(q13;q13) in clearcell sarcoma of tendons and aponeuroses

✍ Scribed by Göran Stenman; Larsgunnar Kindblom; Lennart Angervall

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
687 KB
Volume
4
Category
Article
ISSN
1045-2257

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✦ Synopsis

Abstract

Clearcell sarcoma is a rare soft tissue sarcoma that displays certain similarities to malignant melanoma. In this paper we describe the karyotypic findings and in vitro growth characteristics of a shorttermcultured clearcell sarcoma. The cultured tumor cells had preserved immunohistochemical characteristics and certain ultrastructural features of the primary tumor, including positivity for vimentin, S‐100 protein, and a melanomaassociated antigen, supporting the authenticity of the cultured cells. Cytogenetic analysis revealed an abnormal stemline karyotype of 49,XY, –1, + 8, + 8, + 12, + der(l)t(1;?)(p36.1 –.3;?), t(12,22)(q13;q13). A similar or identical t(12;22) was recently reported in two of four clear‐cell sarcomas. It is suggested that the t(12;22)(q13;q13) is a primary cytogenetic abnormality in clear‐cell sarcoma and distinguishes this tumor type from malignant melanoma.

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