A 68-year-old male smoker is found to have a maximum infrarenal aortic diameter of 3.2 cm on screening ultrasound. The structure marked **A** in the diagram represents the fusiform infrarenal aortic dilatation. Which of the following pathophysiologic mechanisms is MOST directly responsible for the progressive enlargement of the structure marked **A** in abdominal aortic aneurysm?
A 72-year-old man with a 40 pack-year smoking history presents for routine imaging. Abdominal ultrasound reveals a focal aortic dilatation measuring 5.8 cm in maximum diameter in the infrarenal segment, as marked **B** in the diagram. The patient is asymptomatic with stable vital signs. Which of the following is the most appropriate next step in management?
Ready to test yourself?
Test your Surgery knowledge with AI-powered MCQs and detailed explanations — no signup required to try.
Sign up free and practice all 2 Abdominal Aortic Aneurysm MCQs with AI-powered explanations tailored to your performance.
Create Free Account