title: Pseudomembranous Collagenous Colitis: A Case of Not-so-Microscopic Colitis.
abstract: We present a 72-year-old male who developed progressive, watery diarrhea despite anti-motility agents. On colonoscopy, the mucosa was inflamed and covered with an exudate. Stool studies forClostridium difficileandEscherichia coliwere negative. Biopsies revealed pseudomembranous collagenous colitis, a rare form of microscopic colitis. His symptoms improved dramatically with budesonide therapy.
authors.affiliation: Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
authors.forename: Douglas
authors.initials: D
authors.lastname: Grunwald
authors.affiliation: Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
authors.forename: Manisha
authors.initials: M
authors.lastname: Mehta
authors.affiliation: Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
authors.forename: Sunil G
authors.initials: SG
authors.lastname: Sheth