Test your knowledge of this GI finding with questions on diagnosis, laboratory screening, and removal.
A 50-year-old woman presents for a screening colonoscopy. During the examination, the terminal ileum is intubated and a circumferential mass measuring 1.3 cm is incidentally noted (Figure). A biopsy of the mass was taken and results of immunohistochemical staining were positive for chromogranin.
1. What is your diagnosis?
2. What laboratory test can you order to screen for such tumors?
3. How should this mass be removed, endoscopically or surgically?
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