CASE 57
History: A 75-year-old woman presents with a 4-month history of melena, abdominal pain, nausea, and vomiting. Upper endoscopy is unremarkable; colonoscopy revealed diverticular disease only.
1. Which of the following should be included in the differential diagnosis of the imaging findings shown? (Choose all that apply.)
E. Gastrointestinal stromal tumor
2. What is the most common site from where carcinoid tumor arises?
3. What is the substance produced by this lesion that accounts for many of the symptoms?
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