Abnormal growth of the cells of the urethra (lower urinary tract) without malignant characteristics. The disease is MONDO_0004177 (benign urethral neoplasm). Also known as: benign neoplasm of the urethra, benign neoplasm of urethra, benign tumor of the urethra, benign tumor of urethra, benign tumour of the urethra, benign tumour of urethra, benign urethra neoplasm, benign urethra tumor.