Wednesday, October 30, 2013

Concurrence of villous adenoma and non-muscle invasive bladder cancer arising in the bladder: a case report and review of the literature

Villous adenoma first reported by Norbury LE in 1928 [1] is now recognized as a premalignant polyp of the gastrointestinal tract. Up to two-thirds of the lesion occurs in the rectum. There are no differences in distribution between men and women and a peak incidence in the 60’s and 70’s. Whenever possible, local excision and sphincter preservation is the procedure of choice for accessible lesions with favorable characteristics. However, the recurrence is seen in up to 40% of cases even despite complete excision in the rectal.
On the other hand, the villous adenoma in the urinary tract is rare. The most common coexisting tumor is adenocarcinoma which is associated with urachus tumors. Typical clinical presentations are hematuria and irritative symptoms. The prognosis of pure villous adenoma in the urinary tract is excellent.

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