Related Experiment Video
Updated: Apr 21, 2026

A Mouse Model of Intestinal Partial Obstruction
Published on: March 5, 2018
A case of small bowel obstruction caused by konjac
Yoshitaka Ooya1, Masahito Kaji1
1Departments of Emergency and Acute Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka City, Saitama, Japan.
Abstract:
While postoperative adhesions, hernias, and tumors are common causes of small bowel obstruction (SBO), food-induced obstruction is rare. Konjac (Amorphophallus konjac)-related SBO is exceptionally uncommon, with only a few cases documented in the English literature. We present the case of a man in his 50s who developed abdominal pain during breakfast. After conservative management at a local clinic failed, he was referred to our hospital. Abdominal computed tomography indicated SBO of unknown etiology. Emergency laparotomy revealed four connected pieces of konjac obstructing the small intestine. The patient recovered uneventfully and was discharged on postoperative day 8. This case represents a rare instance of konjac-induced SBO. Given the rising global consumption of konjac products-especially in Western countries-clinicians should consider konjac ingestion as a potential cause of food-induced bowel obstruction.
Related Concept Videos
Intestinal Obstruction I: Introduction
Intestinal Obstruction II: Pathophysiology
Pyloric Obstruction
Inflammatory Bowel Disease V: Surgical Management
Here are some common surgical interventions for IBD:
Drugs for Treatment of Constipation-Predominant IBS
Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...

