Bilateral breast tumors, malignant phyllodes tumor and invasive lobular carcinoma in a 46,XX/46,XY mosaic female with family history of breast cancer.

作者: Masako Kasami , Masayukl Yoshlda , Jun Isogaki , Hiroshi Ogawa , Kazuya Shinmura

DOI: 10.1111/J.1440-1827.1997.TB03732.X

关键词: Breast cancerY chromosomePathologyLoss of heterozygosityBiologyInvasive lobular carcinoma46, XX/46,XYKaryotypePhyllodes tumorX chromosome

摘要: Bilateral breast tumors, a malignant phyllodes tumor in the right and an invasive lobular carcinoma left breast, occurred 47-year-old woman with 46XX/46XY mosaic karyotype her peripheral blood lymphocytes intersex external genitalia. Postmortem examination revealed bilateral ovotestis. Three of patient's sisters also had cancer. In situ hybridization Y-specific probe Y-chromosome-specific signal both suggesting that clonal origin tumors this patient was Y-containing cells. Androgen-receptor polymorphism monoallelic X chromosome pattern recurrent tissue taken at autopsy, addition to loss heterozygosity demonstrated locus TP53. The slippage CA repeats shown loci D5S82 D11S527. mechanistic basis for occurrence XX/XY mosaicism, familial clustering cancer is still unknown. present study, however, suggests sex abnormality may have modified phenotype manner similar Klinefelter's syndrome (though phenotypically male) Y promoted cell growth.

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