[Pulsatile vaginal expansion: Case report of an internal iliac aneurysm detected after an injury].

After a pelvic trauma, in a 78 years old women, systematic radiograms showed a polycyclic mass in the left side of the pelvis. This finding was confirmed by B-mode ultrasound echography. The vaginal touch found a pulsatile and expanding mass. At surgery, the diagnosis of a fissuring aneurysm of the internal iliac artery was confirmed, and a curative treatment was undertaken. Reviewing the literature, the authors emphasize the diagnostic usefulness of rectal and vaginal touch, and the importance of an early diagnosis using noninvasive imaging techniques. Surgery is the only treatment for isolated internal iliac aneurysms.