Secretory villous adenomas of the colon have been known to cause a depletin
g syndrome characterized by dehydration, prerenal azotemia, hyponatremia, h
ypokalemia, metabolic acidosis, obtundation, and, in severe cases, death. W
e describe 1 case of classic depleting syndrome and review the literature o
n possible mechanisms. Both cyclic adenosine monophosphate and prostaglandi
n E-2 have been implicated as possible secretagogue compounds in the pathog
enesis of this syndrome unique to the secretory variant form of villous ade
nomas, Indomethacin as a prostaglandin inhibitor has been used with apparen
t benefit in controlling the volume of rectal effluent in patients with sec
retory villous adenomas.