Fusiform abdominal aortic aneurysm

Description

A 3D model of a fusiform abdominal aortic aneurysm, showing the symmetric, circumferential dilation of the aortic wall that tapers gradually into the normal-caliber vessel above and below. The spindle-shaped morphology involves the entire circumference of the aorta. Fusiform aneurysms are the most common morphological type of AAA. The dilation affects all layers of the vessel wall, with the muscularis and elastic laminae thinned and fragmented. Mural thrombus frequently lines the aneurysm sac, and the iliac arteries may be involved in the distal extent. Rupture risk correlates with maximum diameter, with 5.5 cm being the standard threshold for elective repair. Fusiform AAA morphology is the baseline teaching reference for aneurysm classification and surveillance criteria. Medical advisory board reviewed. Ready for rendering, real-time engines, and 3D printing.