bladder papillary urothelial neoplasm urinary tract non-invasive transitional cell neoplasm non-invasive bladder papillary urothelial neoplasm https://www.malacards.org/card/non_invasive_bladder_papillary_urothelial_neoplasm MEDGEN:309424 DOID:6239 A papillary neoplasm of the urinary bladder in which the transitional cells form papillae. The papillary structures exhibit minimal architectural distortion and minimal atypia. Mitoses are infrequent. Patients are at an increased risk of developing new papillary lesions. Occasionally, the new lesions are urothelial carcinomas. NCIT:C39831 non-invasive bladder papillary urothelial neoplasm MONDO:0003822 UMLS:C1518358