Abstract
BACKGROUND: Duodenal web is a rare congenital malformation, exceedingly uncommon in adults, and often misdiagnosed due to the subtle imaging features. CASE SUMMARY: By analyzing the clinical diagnosis process and various imaging findings of a patient from our institution, this case report emphasizes the necessity of upper gastrointestinal series in diagnosing duodenal webs, outlines its typical radiographic features, and provides a literature review on the etiology, clinical presentation, and management of this condition. CONCLUSION: This case report emphasizes the necessity of upper gastrointestinal series in diagnosing duodenal webs.