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Microscopic colitis in children: A single-center experience and systematic review
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DOI：10.1002/jpn3.70432.png)
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Abstract
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Objectives Microscopic colitis (MC) is an inflammatory disease of the large intestine characterized by chronic diarrhea, normal-appearing colonic mucosa on endoscopy, and abnormal inflammatory histopathology. While it is a common cause of chronic diarrhea in adults, MC is infrequently reported in children, and data on its presentation, treatment, and outcomes remain limited. This study aimed to analyze single-center experience and conduct a literature review on pediatric MC.Methods A retrospective review of the Mayo Clinic electronic health records from 2013 to 2024 was performed. Children (<= 18 years) diagnosed with MC were included. Demographics, clinical presentation, treatment, and outcomes were collected. A systematic review of pediatric MC literature was completed.Results MC was diagnosed in 42 children (median age 12.5 years; Q1-Q3 7.25-14.75), with 28 (67%) females. Systematic review identified 29 studies with 258 children with MC (mean age 10 years, standard deviation [SD] 4.9). At Mayo Clinic, treatment varied among providers, and budesonide as monotherapy or in combination was most effective. In the literature, the most commonly used treatments included 5-aminosalicylates (5-ASA, 36%) and budesonide (31.5%). Combination therapy with budesonide plus a biologic or mesalamine appeared to be the most effective therapy, followed by budesonide monotherapy and corticosteroids. Mucosal remission rate was highest with corticosteroids, followed by budesonide. Mean recurrence rate across all treatments was 69%. Biologics (vedolizumab, infliximab) and bismuth showed the lowest recurrence rates.Conclusion Budesonide, either alone or in combination, appears to be most commonly used and effective in treating pediatric MC, but recurrence rates remain high after therapy discontinuation.
Keywords:
chronic diarrhea
collagenous colitis
lymphocytic colitis
pediatrics
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