Villous adenoma of bladder with uncommon location in a super‐aged patient without gross hematuria

Abstract

Introduction There have been few reported cases of villous adenoma of the bladder. It commonly occurs in the superior area of the bladder with hematuria as the most common symptom. Here, we have presented a case of villous adenoma of the bladder neck and reviewed the existing literature. Case presentation A 90‐year‐old man presented with voiding difficulty. Although urine analysis revealed microscopic hematuria and pyuria, the patient never complained about gross hematuria. Ultrasonography and cystoscopic examination revealed a bladder tumor located at the bladder neck. Transurethral resection was performed and villous adenoma was diagnosed by histopathologic examination. Conclusion Villous adenoma of the bladder is a rare disease, which is difficult to diagnose when the patient presents with uncommon clinical features. Although villous adenoma is known as a benign tumor, some reports suggest its association with malignancy. Therefore, careful management and follow‐up are necessary.

Traditional Serrated Adenoma of the Urinary Bladder: The First Report

“…Urinary tract villous adenoma has been found in association with either in situ or invasive adenocarcinoma in 1/5 of these cases. 3–42 Tubular adenoma of the urinary tract is even rarer than villous adenoma. Four cases of tubular adenoma were first described in 2013 by Kao and Epstein.…”

“…A total number of 82 villous adenomas of the urinary tract were identified to date. 5–42 (Table 1) The review of 82 cases revealed slight male predilection with M/F = 1.5/1. The median age of clinical presentation was 63 (range 23-94) years.…”