In secretory diarrheas, there is secretion of isoosmolar fluid into the intestine. In this situation, other electrolyte abnormalities might coexist. Thus, hypokalemia and acidosis are associated with Verner-Morrison syndrome or VIPoma; Examples of secretory diarrheas include congenital abnormalities such as congenital chloridorrhea, in which an abnormality in the genetic control of chloride-bicarbonate exchange in the ileum results in the loss of chloride into the stool. (Long etal., 1981) Secretory diarrhea might be associated with altered motor functions induced by the hormone or transmitter produced by the tumor, as in carcinoid diarrhea. (Von etal., 1993) The typical features of secretory diarrhea include the persistence of the diarrhea with fasting and the absence of steatorrhea, hypokalemia and acidosis typically suggest VIPoma syndrome (Camilleri etal., 1982)