Congenital pancreatic lipase deficiency.

A 5 1/2-year-old boy is reported with congenital lipase deficiency and the presence of colipase. He presented with greasy-oily stools since infancy, but growth and development have been normal. No other cause for exocrine pancreatic insufficiency could be found. Intraluminal (jejunal) fat digestion was defective, but some hydrolytic products of dietary long-chain triglyceride were present. The di- and monoglycerides were probably generated by pregastric lipases, although this was not measured directly. Amylase activity was depressed to some extent, a finding which could not be explained. Our studies do not clarify the issue of whether or not the absence of pancreatic lipase is explained as an inherited defect of lipase synthesis, or if it was acquired in utero or in the early postnatal period.