Introduction :
The inferior vena cava duplication may occur in 0,7 % of general population (1), often fortuitously discovered during radiological exams (2). It can be mistaken for retroperitoneal adenopathy. It is important to be aware about this abnormality in order to avoid hemorrhagic complications during retroperitoneal surgery. A case of a patient with Crohn’s disease who was candidate for surgical treatment in whom an inferior vena cava duplication was incidentally discovered on the CT scan is reported.