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Multiple primary cancer, including transitional cell carcinoma of the upper uroepithelial tract in a multigeneration HNPCC family: molecular genetic, diagnostic, and management implications.

12650804

Am. J. Gastroenterol.. 2003 Mar 98 (3).

We report a multigeneration family where colorectal cancer and cancer of multiple diverse anatomic sites, inclusive of transitional cell carcinoma of the upper uroepithelial tract, were manifested in several relatives.

A specific pattern of cancer of the colorectum, endometrium, ovary, small bowel, and transitional cell carcinoma, with a vertical distribution of this cancer phenotype through multiple generations, was consonant with a diagnosis of hereditary nonpolyposis colorectal cancer.

Germline mutation testing identified the MSH2 mutation, which segregated with the cancer phenotype. This family study clearly demonstrates the value of genetic testing in the management and treatment decision process.

We document, perhaps for the first time, how molecular genetic testing in hereditary nonpolyposis colorectal cancer can aid in the identification of a potential renal transplant donor for a relative with the MSH2 mutation who is experiencing renal insufficiency secondary to transitional cell carcinoma.

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