SI and hyperinsulinemic hypoglycemia, familial, 4: Upon oral or enteral feeding, MVID resembles congenital osmotic diarrhea (characterized by high fecal sodium losses, e.g., congenital glucose-galactose intolerance and congenital sucrase-isomaltase deficiency), presumably due to the reduced brush border localization of SGLT-1 and sucrase-isomaltase (SI).