NEPHROGENIC ADENOMA - CLINICAL AND MORPHO LOGICAL ASPECTS OF A RARE TUMOR

Nephrogenic adenoma represents a benign urothelial tumor of the urinar y bladder, less often of the renal pelvis, the ureter or the urethra. In some cases it is found in urethral diverticulas. The histogenesis i s still not clear. We report on 9 cases with particular regard to path ogenetic, clinical and morphological aspects.