Commonest endocrine tumor of pancreas: (A) A cells, (B) B cells, (C) Delta cells, (D) VIPoma
Answer is B. Insulinomas- arising from B cells of pancreas- are the commonest endocrine pancreatic tumour(60%). Gastrinomas - arising from non-beta cells (G cells) of the pancreas- are the 2nd most common endocrine pancreatic tumour. Then comes Glucagonomas (arising from A cells) and VIPomas (arising from D2 cells of pancreas). Reference : page 709-10 SRB's manual of surgery 5th edition