Figure 14b. Gastric carcinoids in MEN 1. (a) Axial T2-weighted MR image obtained in a patient with a known gastrinoma and associated Zollinger-Ellison syndrome shows marked gastric wall thickening. (b) Unenhanced CT scan obtained in a different patient shows a solitary nodule arising from the wall of the stomach. This finding is atypical; usually, there are multiple gastric nodules. Biopsy revealed the nodule to be a gastric carcinoid.