Congenital anomalies of the genitourinary system can help in diagnosis of the primary site of metastatic cancer: a case report and a review of the literature.

Objective To analyze whether the presence of congenital anomalies of the genitourinary system that are accompanied by specific types of cancer and predispose patients to many complications, including infection, obstruction, stasis, calculus formation, and impaired renal function, could help in the diagnosis of the primary site of a metastatic tumor.