Which finding is most concerning for an abdominal aortic aneurysm?

• A. Severe left lower quadrant pain radiating to the groin
• B. Pulsating abdominal mass with back pain
• C. Fever and productive cough
• D. Swollen ankles and shortness of breath

Answer: (B)

Abdominal aortic aneurysm is most dangerous when it shows signs of expansion or impending rupture. A pulsatile abdominal mass suggests the aorta is enlarged, and back pain indicates the aneurysm may be extending toward rupture or already causing leakage. Together, these findings point to a life-threatening emergency that requires urgent transport and rapid assessment for potential rupture (including monitoring vitals and preparing for possible shock).

The other signs describe conditions unrelated to AAA: fever with productive cough points to a respiratory infection, swollen ankles with shortness of breath suggests heart failure or edema, and abdominal pain radiating to the groin could be a renal or GI issue. None of those together indicate an imminent AAA rupture as clearly as a pulsatile abdominal mass with back pain does.