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To clarify the meaning of the word steatorrhea, it is indeed the passage
of smelly, bulky, bouyant, palke greasy stools.  These may be liquid or
semi formed.  The causes of steatorrhea include

celiac disease
pancreatic disease
cirrhosis
other livert diseases
malabsorbtion due to other causes
giardia infection
vasculr disease
whipples disease
small bowel crohn's
and about a 100 other diseases

kidney disease does not cause it as far as I know
joe murray