Pancreatic Exocrine Insufficiency (PEI) - Diagnostic Algorithm PEI definite: • Total pancreatectomy • Severe chronic pancreatitis • Tumour destroying head of pancreas • Acute pancreatitis destroying head of pancreas PEI possible: • Mild and moderate chronic pancreatitis • After severe acute pancreatitis • After Whipple procedure • Cystic fibrosis • Gastrectomy with postprandial asynchrony • Vitamin A, E, D, K deficiency PEI unlikely: • IBS • Coeliac disease • IBD • Weight loss in older people • Type 2 diabetes • Bowel resection #Pancreatic #Exocrine #Insufficiency #PEI #Diagnosis #Algorithm #PERT
