Screening for abdominal aortic aneurysms.

Ultrasonography remains the screening modality of choice for abdominal aortic aneurysms despite many advances in imaging modalities. Several randomized trials were performed that demonstrated the effectiveness of ultrasound-based screening to reduce aneurysm-related mortality. Ultrasound is both cost effective and low risk. Controversies do persist in selecting the appropriate populations for screening, and several national societies have set recommendations.