Etiologies of exocrine pancreatic insufficiency.

Exocrine pancreatic insufficiency (EPI) is a major cause of maldigestion and malnutrition, resulting from primary pancreatic diseases or other conditions. As the prevalence of EPI continues to rise, accurate identification of its etiology has become critical for the diagnosis and treatment of pancreatic secretory insufficiency. EPI can result from both pancreatic and non-pancreatic disorders.