What is a potential outcome of untreated abdominal aortic aneurysm?

An untreated abdominal aortic aneurysm can lead to a rupture, which is a life-threatening event. The abdominal aorta is the largest artery in the abdominal cavity, and if an aneurysm formed in this artery continues to grow without intervention, the walls of the artery can become weak and eventually burst.

When a rupture occurs, it causes internal bleeding, which can lead to rapid blood loss and shock. This condition is often fatal if immediate surgical intervention is not initiated. The mortality rate associated with a ruptured abdominal aortic aneurysm is high, emphasizing the importance of timely diagnosis and treatment for individuals with known aneurysms. This potential for rupture and its associated risk underscores why the correct answer focuses on the severe consequences of untreated cases.