Increasing Incidence of Microscopic Colitis in a Population-Based Cohort Study in Switzerland.

Microscopic colitis (MC) is a chronic inflammatory disease of the colon that presents with chronic, nonbloody watery diarrhea and only few or no endoscopic abnormalities. Histologic examination discriminates lymphocytic colitis (LyC; presence of ≥20 intraepithelial lymphocytes per 100 surface epithelial cells) and collagenous colitis (CC; colonic subepithelial collagen band >10 μm in diameter). MC not otherwise specified describes a subgroup of patients who do not fulfill the diagnostic criteria for either CC or LyC.

[Functional gastrointestinal disorders: update on the Rome IV criteria].

Functional gastrointestinal disorders are highly prevalent worldwide and may have an important impact on the quality of life of affected patients. In addition, they are associated with a major socio-economic impact. In 2016 the Rome IV criteria were published that provided an update of the 2006 published Rome III criteria for functional gastrointestinal disorders.

Eosinophilic Esophagitis: Relationship of Subepithelial Eosinophilic Inflammation With Epithelial Histology, Endoscopy, Blood Eosinophils, and Symptoms.

Objectives: For technical reasons, the histologic characterization of eosinophilic esophagitis (EoE)-specific alterations is almost exclusively based on those found in the esophageal epithelium, whereas little is known about subepithelial abnormalities. In this study, we aimed to systematically assess the nature of subepithelial histologic alterations, and analyze their relationship with epithelial histologic findings, endoscopic features, and symptoms.

Methods: Adult patients with established EoE diagnosis were prospectively included during a yearly follow-up visit.