Fate of Aneurysmal Common Iliac Artery Landing Zones Used for Endovascular Aneurysm Repair

Purpose: To determine outcomes of aneurysmal common iliac arteries (aCIA) used for landing zones (LZs) during endovascular aneurysm repair (EVAR). Methods: This single-center study retrospectively compared 57 EVAR patients (mean age 72±8 years; 56 men) with 70 aCIAs (diameter ≥20 mm) to 25 control EVAR subjects (mean age 73±7 years; 20 men) with 50 normal (≤15-mm) CIA LZs treated consecutively during the same time interval. The CIA LZ measurements were analyzed using random effects linear mixed models to determine diameter change over time. Life tables were used to estimate freedom from endoleak, reintervention, and all-cause mortality. Results: The mean maximum preoperative CIA diameter in the aCIA LZ group was 24.8±4.5 mm (range 20.0–47.3, median 23.9) vs 13.6±1.5 mm (range 9.2–15.0, median 13.9; p