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Figure 6b. Pancreaticoduodenal imaging in MEN 1: MR imaging. (a–c) Solitary adenoma (insulinoma). (a) Axial fat-suppressed T1-weighted MR image shows a small low-signal-intensity lesion (arrow) within the pancreatic body. (b) On an axial fat-saturated T2-weighted MR image, the lesion (arrow) demonstrates high signal intensity. (c) Gadolinium-enhanced gradient-echo T1-weighted MR image shows the lesion (arrow) with avid enhancement. The lesion proved to be an insulinoma following surgical excision. (d) Multiple adenomas (insulinomas). Axial T2-weighted MR image obtained in a different patient shows multiple small high-signal-intensity lesions throughout the pancreas. At surgery, these lesions proved to be insulinomas.
