Collagenous colitis is characterized by watery diarrhea and inflammato
ry infiltration associated with a subepithelial collagen deposit on co
lonic biopsies despite a normal or subnormal endoscopic appearance. We
here describe 5 patients treated with the locally active steroid bude
sonide, Complete and partial response was observed in 3 and 2 patients
, respectively. Budesonide thus seems to be of therapeutic benefit in
collagenous colitis. Prospective randomized long-term studies are need
ed to support this hypothesis.