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Journal of digestive diseases, 2013-06, Vol.14 (6), p.277-281
Ort / Verlag
Australia: Blackwell Publishing Ltd
Erscheinungsjahr
2013
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
Microscopic colitis (MC) is characterized by a triad of watery diarrhea, usually normal colonoscopic findings and typical microscopic findings. Two distinct histological forms of MC have been defined: lymphocytic colitis and collagenous colitis, but overlapping features may be present. The incidence of MC appears to be rising and in some countries it may account for as many as 10–20% of patients with non‐bloody watery diarrhea. The cause of MC remains unknown and is likely to be multifactorial. The pathogenesis is poorly defined, and numerous immunological abnormalities have been reported. MC is commonly associated with autoimmune diseases including celiac disease. Use of various medications, most notably non‐steroidal anti‐inflammatory agents and proton pump inhibitors, have been etiologically implicated but not firmly established as causative. In imperfect trials several agents have been reported to be effective in the treatment of MC; budesonide is the best studied and evidence supporting its effectiveness is the most persuasive. In cases of otherwise unexplained watery, non‐bloody diarrhea, MC should be considered and colonic biopsied specimens should be taken of normal‐appearing mucosa.