Postprandial Abdominal Pain

An active man in his early 80s presented to the hospital with a 6-month history of cramping epigastric abdominal pain that occurred 30 minutes after eating solid food and was associated with nausea and vomiting. His medical history was significant for atrial fibrillation and a history of an open abdominal aortic aneurysm repair. What is your diagnosis?
Source: JAMA Surgery - Category: Sports Medicine Source Type: research