Nephrogenic Adenoma
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![UrinaryBladder_Misc_NA1.jpg](/slides-13/slides/UrinaryBladder_Misc_NA1.jpg)
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Nephrogenic adenoma is a benign proliferative glandular lesion usually found in the urinary bladder. Bladder calculi, instrumentation, radiation therapy, repeated urinary tract infections, and trauma are the usual predisposing factors. A small percentage of cases arise following renal transplantation. Nephrogenic adenoma displays papillary, polypoid, tubular or flat configuration and is lined by cuboidal or low columnar epithelium.