USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 58-year-old man is brought to the emergency department because of severe lower back pain which radiates to his right flank and groin. He is alert and oriented on arrival to the hospital, but soon begins to be difficult to arouse. Physical examination shows an afebrile, cyanotic, tachycardic, and hypotensive patient. Abdominal examination shows a pulsatile mass in the right flank. Which of the following is the most likely diagnosis?