Pathology of bladder carcinoma.

Pathologists play an important role in the evaluation of bladder carcinomas. They are responsible for the diagnosis of the tumor and its categorization, grading, and staging, all of which guides urologists and oncologists in subsequent management. There are considerable differences of opinion as to the categorization and grading of papillary neoplasms, which represent the largest subset of bladder biopsy pathologic specimens.