Related Experiment Video
Updated: Jun 24, 2026

Single-Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy Model in Mice
Published on: February 10, 2023
After 3 years of starvation: duodenum swallowed remaining stomach
Andreas Hillenbrand1, Uta Waidner, Doris Henne-Bruns
1Department of General, Visceral, and Transplantation Surgery, University Hospital of Ulm, Steinhoevelstr. 9, 89075, Ulm, Germany. andreas.hillenbrand@uniklinik-ulm.de
Abstract:
A 42-year-old morbidly obese patient (BMI 44.1 kg/m(2)) was admitted to our emergency room with upper abdominal pain, nausea, and cholestasis. Nine years ago, a vertical banded gastroplasty had been performed (former BMI 53.5 kg/m(2)) with a subsequent weight loss to BMI 33.0 kg/m(2). After regaining weight up to a BMI of 47.6 kg/m(2), 5 years ago a conversion to a gastric bypass was realized. A computed tomography of the abdomen showed an invagination of the remaining stomach into the duodenum causing obstruction of the orifice of common bile duct. The patient underwent an open desinvagination of the intussusception and resection of the remaining stomach. Gastroduodenal intussusception is rare and mostly secondary to gastric lipoma. To prevent this rare but serious complication, the remaining stomach could be fixed at the crura of the diaphragm, tagged to the anterior abdominal wall by temporary gastrostomy tube, or resected.
Related Concept Videos
What is Monogastric Digestion?
Gastric Emptying
Gross Anatomy of the Stomach
Enteral Nutrition II: Nasointestinal and Gastrostomy Feeding
Nasointestinal Feeding
Nasointestinal feeding involves placing a tube through...
Intestinal Phase of Digestion
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
Deglutition
Swallowing can be divided into three stages: the voluntary phase, the pharyngeal phase, and the esophageal phase. Although the...

