History: A 70-year-old man suffered severe epigastric pain 3 months ago. He now presents with 3 weeks of increasing vomiting and is unable to keep any solid food down.
1. Which of the following should be included in the differential diagnosis of the dominant imaging finding? (Choose all that apply.)
A. Superior mesenteric artery (SMA) syndrome
2. What is the most common primary malignant lesion of the duodenum?
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