Idiopathic hyperamylasemia.

A 25-year-old pregnant Japanese woman was diagnosed with idiopathic hyperamylasemia. The administration of a beta-stimulant caused a further increase in the serum levels of pancreas-type amylase and lipase.The patient's hyperamylasemia concomitant with elevated serum levels of lipase, elastase 1, and trypsin lasted over a 4 year-period, in which the patient remained asymptomatic. It is possible that the pancreas in some women with the idiopathic hyperamylasemia can respond to a beta-adrenoceptor stimulation with respect to pancreatic enzyme secretion.