Review Article

Upper Gastrointestinal Involvement in Crohn Disease: Histopathologic and Endoscopic Findings

Objectives: Studies describing the prevalence of upper gastrointestinal (GI) Crohn disease (CD) and its histopathologic changes have been inconsistent as a result of different definitions used for upper GI involvement, diverse populations, and varying indications for endoscopy. We reviewed the literature describing endoscopic findings and histologic lesions in gastric and…