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steatorrhea
Steatorrhea (or steatorrhoea) is the presence of excess fat in feces. Stools may also float due to excess gas, have an oily appearance and can be especially foul-smelling. An oily anal leakage or some level of fecal incontinence may occur. There is increased fat excretion, which can be measured by determining the fecal fat level. The definition of how much fecal fat constitutes steatorrhea has not been standardized.
==Causes==
Possible biological causes can be lack of bile acids (due to liver damage, hypolipidemic drugs, or gallbladder removal (cholecystectomy)), defects in pancreatic enzymes, defective mucosal cells, certain medicines that block fat absorption, or indigestible or excess oil/fat in diet. The absence of bile acids will cause the feces to turn gray or pale. Another cause of steatorrhea is due to the adverse effect of octreotide or lanreotide, which are analogs of somatostatin, used clinically to treat acromegaly.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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