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In medicine, the fecal fat test is a diagnostic test for fat malabsorption conditions, which lead to excess fat in the feces (steatorrhea). ==Background== In the Duodenum, dietary fat (primarily triglycerides) is digested by enzymes such as pancreatic lipase into smaller molecules of 1,2-Diacylglycerols and Free Fatty Acids which can be absorbed through the wall of the Jejenum of the small intestine 〔http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1413370/〕 and enter the circulation for metabolism and storage. As fat is a valuable nutrient, human feces normally contain very little undigested fat. However, a number of diseases of the pancreas and gastrointestinal tract are characterized by fat malabsorption. Examples of such diseases are: * disorders of exocrine pancreatic function, such as chronic pancreatitis, cystic fibrosis and Shwachman–Diamond syndrome (these are characterized by deficiency of pancreatic digestive enzymes) * celiac disease (in which the fat malabsorption in severe cases is due to inflammatory damage to the integrity of the intestinal lining) * short bowel syndrome (in which much of the small intestine has had to be surgically removed and the remaining portion cannot completely absorb all of the fat). *small bowel bacterial overgrowth syndrome 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fecal fat test」の詳細全文を読む スポンサード リンク
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