<prompt> Which of the following is the MOST common endocrine tumour of pancreas?InsulinomaGastrinomaVIPomaGlucagonoma  <response>: Insulinomas are the most common pancreatic endocrine neoplasms. Patients present with a typical clinical syndrome known as Whipples triad which consists of symptomatic fasting hypoglycemia, serum glucose level Lab evaluation shows elevated insulin and C-peptide levels. Insulinomas are usually localized with CT scanning and EUS. They are evenly distributed throughout the head, body, and tail of the pancreas. 90 of insulinomas are benign only 10 of it is malignant. 90 are sporadic and only 10 are associated with the MEN1 syndrome. Ref: Schwazs Principles of Surgery, 9e chapter 33. 