Final answer:
An AAA, or abdominal aortic aneurysm, feels like a pulsating mass or a throbbing sensation in the middle or lower part of the abdomen upon palpation.
Step-by-step explanation:
An AAA, or abdominal aortic aneurysm, often feels like a pulsating mass or a throbbing sensation in the middle or lower part of the abdomen upon palpation. Palpation refers to the act of using hands to feel or examine a specific area of the body. When a healthcare professional feels the abdomen, they may notice an enlarged and bulging section of the aorta, which is the main blood vessel that supplies blood to the abdomen and lower body.