Aortic sepsis from an appendiceal abscess.

A 75-year-old man with infection in a pre-existing abdominal aortic aneurysm secondary to an appendiceal abscess is described. A single similar case has been reported in the English literature. Appendicitis was diagnosed at exploration. In both cases, the appendix was located in a retroileal position in the retroperitoneum, thereby allowing tracking of the abscess to the aneurysm wall. Resection and extra-anatomic vascular reconstruction were curative.