Preservation of internal iliac artery flow during endovascular aortic aneurysm repair in a patient with bilateral absence of common iliac artery

The sandwich technique to preserve the internal iliac artery during EVAR for ruptured abdominal aortic aneurysm with congenital anomalies

Congenital abnormalities of the iliac artery are uncommon and often discovered incidentally during the diagnosis or treatment of peripheral vascular diseases such as abdominal aortic aneurysm (AAA) and peripheral arterial diseases. The endovascular treatment of infrarenal AAA can be complicated by anatomic abnormalities in the iliac arteries, such as the absence of the common iliac artery (CIA) or overly short bilateral common iliac arteries. We present a case of a patient with a ruptured AAA and bilateral absence of the CIA, successfully treated by endovascular intervention combined with preservation of the internal iliac artery using the sandwich technique.

Modified adaption of iliac branch endografts in rare congenital anomaly of proximal origin of bilateral internal iliac arteries

We report a case of 55 mm abdominal aortic aneurysm coinciding with a rare congenital anomaly of proximal origin of bilateral internal iliac arteries (IIAs). Because renal to iliac bifurcation lengths were bilaterally short (129 mm and 125 mm), a trunk-ipsilateral leg and an iliac leg were deployed before iliac branch component insertion into the iliac leg. With help of a pull-through wire, internal iliac component was delivered without migration of the main body. The left IIA was embolized, but the right IIA was successfully preserved with commercially available iliac branch endoprosthesis only from femoral approaches, and the patient fully recovered without any complication.

Terminal quadrifurcation of the aorta: A case report

Congenital anatomical variations of the terminal aorta are rare. Given the increasing number of endovascular and laparoscopic procedures, such variations are likely to assume greater clinical significance. A 15-year-old male sustained a pelvic vascular injury following a stab to the left gluteus. Computed tomographic angiography and digital subtraction angiography demonstrated a left superior gluteal artery pseudoaneurysm and absence of the common iliac arteries consistent with congenital quadrifurcation of the terminal aorta. The patient was subsequently treated with endovascular coil embolisation with a good angiographic and clinical outcome.

Contribution

Terminal aortic variants are rare and given the increasing number of interventional endovascular procedures performed in the aorta, an awareness of the potential anatomical configurations of the distal aortic branches is of increasing relevance. The authors describe the imaging findings of one such anatomical variant.