Which term refers to Abdominal Aortic Aneurysm, a localized dilatation of the abdominal aorta exceeding the normal diameter by more than 50 percent?

• A. Aneurysm
• B. Pulse
• C. AAA
• D. Reproducible chest pain

Answer: (C)

An abdominal aortic aneurysm is a focal dilation of the abdominal aorta that is more than 50% larger than its normal diameter. The term abbreviated for this condition is AAA, which makes it the best answer because it precisely names both the location (abdominal aorta) and the pathology (aneurysm) in a concise, standard clinical shorthand. Using a general term like aneurysm is true but vague, since aneurysms can occur in other vessels. The other options don’t fit: pulse is a measurement, not a disease term; and reproducible chest pain is a symptom, not a vascular dilation.