disease has location urinary system disorder hyperplasia urothelial hyperplasia UMLS:C1336895 Hyperplasia of the transitional epithelium of the urinary tract. Morphologically it is subdivided into flat and papillary hyperplasia. -- 2003 MEDGEN:234463 urothelium hyperplasia urothelial hyperplasia MONDO:0024483 NCIT:C27877 urothelium