LIPASE DEFICIENCY
• Impaired secretion – chronic pancreatitis
• Inactivation – excess gastric acid
BILE DEFICIENCY • Underproduction – liver disease • Obstruction – obstructive jaundice • Increased degradation – bacterial overgrowth
MUCOSAL DISEASE • Coeliac disease • Ileal resection • Crohn’s disease
IMPAIRED FAT TRANSPORT • Abetalipoproteinaemia
LYMPHATIC DEFICIENCY • Lymphoma • Whipple’s disease