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Bladder Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Cellular Classification of Bladder Cancer

More than 90% of bladder carcinomas are transitional cell carcinomas derived from the uroepithelium. About 6% to 8% are squamous cell carcinomas, and 2% are adenocarcinomas.[1] Adenocarcinomas may be either of urachal origin or of nonurachal origin; the latter type is generally thought to arise from metaplasia of chronically irritated transitional epithelium.[2] Pathologic grade, which is based on cellular atypia, nuclear abnormalities, and the number of mitotic figures is of great prognostic importance.

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  1. Mostofi FK, Davis CJ, Sesterhenn IA: Pathology of tumors of the urinary tract. In: Skinner DG, Lieskovsky G, eds.: Diagnosis and Management of Genitourinary Cancer. Philadelphia, Pa: WB Saunders, 1988, pp 83-117.
  2. Wilson TG, Pritchett TR, Lieskovsky G, et al.: Primary adenocarcinoma of bladder. Urology 38 (3): 223-6, 1991.
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Last Updated: February 25, 2014
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