Abstract
Internal iliac artery (hypogastric) aneurysms are most commonly associated with common
iliac or other arterial aneurysms. Isolated internal iliac aneurysms are quite rare
and represent about 1/2% of intracorporal aneurysms. The occurrence of an isolated
internal iliac artery aneurysm many years after repair of an abdominal aortic aneurysm,
and its successful surgical management have not been previously reported. An 84-year-old
Caucasian male presented with acute left femoro-popliteal deep vein thrombosis 11
years after repair of an abdominal aortic aneurysm with insertion of a knitted Dacron
tube graft. In the course of his workup he was found to have an isolated 5-cm right,
hypogastric, arterial aneurysm. After treating the patient for this deep vein thrombosis,
the internal iliac artery aneurysm was repaired via a transperitoneal approach, using
the technique of obliterative endoaneurysmorrhaphy. The natural history, diagnosis,
and options for treatment modalities of isolated internal iliac arterial aneurysms
are presented with a review of the literature.