Retroperitoneal fibrosis and infection of an aortic graft prosthesis: diagnosis and therapeutic problems.

The occurrence of a retroperitoneal fibrosis (RPF) after an aorto-bifemoral bypass is unusual. A case of RPF as a complication of an infection of the graft prosthesis is reported. Computed tomography and magnetic resonance imaging prove useful in diagnosing graft infection: they may reveal periprosthetic gas or perigraft fluid persisting for several months after surgery. However, they may fail when they are performed too early, and repeat performance is suggested.