Congenital anomalies of the inferior vena cava are rare. Double inferior vena cava is present in 1– 3% of the general population and can create clinical problems. They are not commonly recognized since they do not cause symptoms by themselves; however, they present challenges to surgeons operating on structures within the retroperitonium.

Here, we report a case with incidentally discovered double inferior vena cava that underwent retroperitoneal lymphadenectomy as a step of interval debulking for stage III ovarian cancer.

Double IVC is a rare vascular anomaly that should be diagnosed before retroperitoneal surgery to avoid increased risk of bleeding.