What is the most likely complication of aneurysms?

The most likely complication of aneurysms is hemorrhage. Aneurysms are abnormal bulges in blood vessels that can weaken the vessel wall. If the pressure of the blood flowing through the aneurysm exceeds the strength of the vessel wall, it can lead to rupture, causing significant internal bleeding or hemorrhage. This complication can be life-threatening and often requires immediate medical intervention.

While peripheral aneurysms certainly present risks, such as embolization and rupture, the overarching concern for all types of aneurysms is the potential for hemorrhage resulting from rupture. Stenosis refers to narrowing of the vessel, which is not directly a complication of aneurysms but rather a separate vascular condition. Thrombosis involves the formation of a blood clot within the vessel, which can occur as a consequence of aneurysms but is not as commonly associated as hemorrhage. Thus, while peripheral aneurysms can be associated with embolization or rupture, the highlighted complication of hemorrhage encompasses a broader range of aneurysm presentations and is critical in evaluating patient risk.