Weight Loss and Abdominal Pain in Diabetic Man: What Test?

What study would you order to determine the cause of progressively worsening crampy abdominal pain and unintentional weight loss in an older patient with diabetes?

A 74-year-old man with diabetes presents with a chief complaint of crampy abdominal pain, particularly following meals, that has been progressively worsening over the past 6 months. Since that time, he has unintentionally lost 8 lb. His stools have been loose, but otherwise unremarkable. Which of the following studies would reveal the most likely diagnosis?

A. Esophagogastroduodenoscopy
B. RUQ ultrasonogram
C Colonoscopy                                 
D. CT angiography of the abdomen


 Please click here for the answer and discussion.