A benign or malignant, primary or metastatic neoplasm involving the urinary system. --2003. The disease is Monarch Disease Ontology term MONDO_0021066 (urinary system neoplasm). Also known as: neoplasm of renal system, neoplasm of the urinary system, neoplasm of the urinary tract, neoplasm of urinary system, neoplasm of urinary tract, renal system neoplasm, renal system neoplasm (disease), renal system tumor.