A large solitary Brunn's cyst caused a ball-valve type of obstruction of the bladder neck in a 29-year-old man without endoscopic or histological evidence of bladder inflammation. Unroofing and drainage restored normal voiding. The histopathological features of Brunn's nests are reviewed.

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http://dx.doi.org/10.1016/s0022-5347(17)42316-0DOI Listing

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