Steatorrhea (or steatorrhoea) is the presence of excess fat in feces. Stools may be bulky and difficult to flush, have a pale and 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.
Putamen: An area in the brain within a structure called the lentiform nucleus. The putamen may decrease in size as a result of damage in Huntington's disease.
lumen (plural lumens or lumina) ( 1 physics) In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. ( 2 anatomy) The cavity or channel within a tube or tubular organ. ( 3 botany) The cavity bounded by a plant cell wall.