<prompt> Symptoms of VIPOMA-Gall stonesSecretory diarrhoeaFat malabsorptionFlushing  <response>: A vipoma is a non-beta pancreatic islet cell tumor secreting vasoactive intestinal peptide VIP, resulting in a syndrome of watery diarrhea, hypokalemia, and achlorhydria WDHA syndrome.The major clinical features are prolonged watery diarrhea fasting stool volume 750 to 1000 mLday Ref Davidson edition23rd pg678b 