This case report describes isolated aneurysm of the left internal iliac artery with neurofibroma.
A 72-year-old man was seen at the hospital because of a left inguinal mass, and was found to have a strangulated hernia and an isolated aneurysm of the left internal iliac artery. The patient was admitted to the hospital for treatment. At operation, the inguinal tumor so strongly adhered to the surrounding tissue that we were obliged to select resection of the ilioinguinal nerve, testicular artery, and vein in order to remove the tumor. Intraoperative frozen section diagnosis of the tumor was neurofibroma, and so the tumor was left intact. Then the left internal iliac artery was freed, its central side was ligated to its peripheral side, and the aneurysm was removed. This case of isolated internal iliac aneurysm coexisted with neurofibroma is relatively rare. The anatomical location of the aneurysm make the early detection difficult, and it is often found after rupture has occurred.
We could resect the aneurysm before rupture. This patient has been in good condition for postoperative 12 months.