Which is the least malignant pancreatic endocrine tumor ?: (A) Zollinger-Ellison syndrome, (B) Insulinoma, (C) VIPoma, (D) Glucagonoma
Answer is B. Insulinoma patients generally presents with hypoglycemia symptoms. Mainly located in the pancreas, and malignancy is <10%. Reference: Table 350-2, Harrisons Principles of Internal Medicine, 18th Edition, Page 3057