Review Question - QID 210775

A 72-year-old man presents to his primary care physician because he has been having flank and back pain for the last 8 months. He said that it started after he fell off a chair while doing yard work, but it has been getting progressively worse over time. He reports no other symptoms and denies any weight loss or tingling in his extremities. His medical history is significant for poorly controlled hypertension and a back surgery 10 years ago. He drinks socially and has smoked 1 pack per day since he was 20. His family history is significant for cancer, and he says that he is concerned that his father had similar symptoms before he was diagnosed with multiple myeloma. Physical exam reveals a painful, pulsatile enlargement in the patient's abdomen. Between which of the following locations has the highest risk of developing this patient's disorder?