CASE 45

History: A 67-year-old man with melena. Upper GI endoscopy found an ulcerated extrinsic mass effect on the third part of the duodenum.

1. Which of the following should be included in the differential diagnosis of the case and imaging finding shown? (Choose all that apply.)

A. Gastrinoma

B. Lymphoma

C. Carcinoma

D. Pancreatitis

E. Pseudocyst

2. What is the most common histologic type of pancreatic malignancy?

A. Acinar epithelial adenocarcinoma

B. Ductal epithelial adenocarcinoma

C. Endocrine tumor

D. Metastatic tumor

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