Adenocarcinoma and dysplasia in an ileal neobladder after ileocystoplasty for interstitial cystitis.

We report a 54-year-old woman with an adenocarcinoma of an ileal neobladder arising upon a background of ileal mucosal dysplasia. We believe that no case study or report has previously documented neobladder ileal mucosal dysplasia adjacent to an ileal neobladder adenocarcinoma. This observation supports the current hypothesis that ileal neobladders are dynamic environments for potential malignancy, and moreover, suggests a sequence of morphologic and molecular derangements similar to that seen in colorectal carcinoma. Those patients status post ileal neobladder are at risk for glandular dysplasia and malignancy and should be followed closely.