benign neoplasm
 |__organ system benign neoplasm__
disease of anatomical entity      |
 |__urinary system disease________|
                                  urinary system benign neoplasm
                                   |__bladder benign neoplasm
                                   |   |__bladder flat intraepithelial lesion
                                   |   |__bladder leiomyoma
                                   |   |__bladder squamous papilloma
                                   |   |__nephrogenic adenoma of urinary bladder
                                   |   |__urinary bladder inverted papilloma
                                   |   |__urinary bladder villous adenoma
                                   |__kidney benign neoplasm
                                   |   |__childhood multilocular cystic kidney neoplasm
                                   |   |__kidney angiomyolipoma(+)
                                   |   |__kidney lipoma
                                   |   |__nephrogenic adenofibroma
                                   |   |__nephrogenic adenoma(+)
                                   |   |__nephroma(+)
                                   |   |__renal adenoma(+)
                                   |   |__renal oncocytoma(+)
                                   |   |__renal pelvis benign neoplasm(+)
                                   |__ureteral benign neoplasm
                                   |   |__schwannoma of ureter
                                   |   |__ureter leiomyoma
                                   |   |__ureter urothelial papilloma(+)
                                   |__urethral benign neoplasm
                                   |   |__nephrogenic adenoma of the urethra
                                   |   |__paraurethral gland neoplasm
                                   |   |__urethra leiomyoma
                                   |   |__urethral urothelial papilloma(+)
                                   |   |__urethral villous adenoma
                                   |__urinary tract papillary transitional cell benign neoplasm
                                       |__bladder papillary transitional cell neoplasm(+)
                                       |__urinary tract non-invasive transitional cell neoplasm