Is It Anorexia? Congenital Duodenal Web.

Congenital duodenal web (CDW) is a rare cause of intestinal obstruction in adults, making diagnosis challenging. We present the case of a 26-year-old woman with chronic epigastric symptoms who recently developed vomiting and significant weight loss. Prolonged compensatory duodenal dilation obscured typical radiological signs and delayed preoperative identification. The diagnosis was confirmed intraoperatively and managed surgically. This case highlights the need to consider CDW in adults with unexplained proximal gastrointestinal obstruction.