|Classification and external resources|
Lymphocytic colitis is a subtype of microscopic colitis, a condition characterized by chronic non-bloody watery diarrhea. The colonoscopy is normal but histology of the mucosal biopsy reveals an accumulation of lymphocytes in the colonic epithelium and connective tissue (lamina propria). Collagenous colitis shares this feature but additionally shows a distinctive thickening of the subepithelial collagen table. The peak incidence of lymphocytic colitis is in persons over age 50; the disease affects women and men equally. Lymphocytic colitis was first described in 1989.
No definite etiology has been determined. Some reports have implicated long-term usage of NSAIDs, antidepressants specifically Sertraline (Zoloft), and other drugs; and overactive immune responses are also suspected.
Budesonide, in colonic release preparations, has been shown in randomized controlled trials to be effective in treating this disorder. It helps control the diarrheal symptoms and treatment is usually given for several weeks. Sometimes it is used to prevent frequent relapses.
Over-the-counter antidiarrheal drugs may be effective for some people with lymphocytic colitis. Anti-inflammatory drugs, such as salicylates, Mesalazine, and systemic corticosteroids may be prescribed for people who do not respond to other drug treatment. The long-term prognosis for this disease is good with a proportion of people suffering relapses which respond to treatment.
- Münch A, Aust D, Bohr J, Bonderup O, Fernández Bañares F, Hjortswang H, et al. (2012). "Microscopic colitis: Current status, present and future challenges: statements of the European Microscopic Colitis Group.". J Crohns Colitis 6 (9): 932–45. doi:10.1016/j.crohns.2012.05.014. PMID 22704658.
- Rasmussen MA, Munck LK (2012). "Systematic review: are lymphocytic colitis and collagenous colitis two subtypes of the same disease - microscopic colitis?". Aliment Pharmacol Ther 36 (2): 79–90. doi:10.1111/j.1365-2036.2012.05166.x. PMID 22670660.
- Lazenby AJ, Yardley JH, Giardiello FM, Jessurun J, Bayless TM (1989). "Lymphocytic ("microscopic") colitis: a comparative histopathologic study with particular reference to collagenous colitis". Hum. Pathol. 20 (1): 18–28. PMID 2912870.
- Chande N, MacDonald JK, McDonald JW (2009). "Interventions for treating microscopic colitis: a Cochrane Inflammatory Bowel Disease and Functional Bowel Disorders Review Group systematic review of randomized trials.". Am J Gastroenterol 104 (1): 235–41; quiz 234, 242. doi:10.1038/ajg.2008.16. PMID 19098875.
- Fernández-Bañares F, Salas A, Esteve M, Espinós J, Forné M, Viver J (2003). "Collagenous and lymphocytic colitis. evaluation of clinical and histological features, response to treatment, and long-term follow-up.". Am J Gastroenterol 98 (2): 340–7. doi:10.1111/j.1572-0241.2003.07225.x. PMID 12591052.