# An unusual cause of small bowel obstruction: duodenal bezoar-induced diverticulitis

## TL;DR

An elderly woman's small bowel obstruction was caused by a rare complication involving a food bezoar and inflamed diverticulum in the duodenum.

## Contribution

This case highlights enterolith-induced diverticulitis as a rare but important cause of small bowel obstruction in elderly patients.

## Key findings

- CT imaging identified an intraluminal lesion at the duodenojejunal junction consistent with diverticulitis and partial SBO.
- Serial imaging showed migration of the intraluminal mass, but surgery was required due to persistent obstruction.
- The case emphasizes the importance of early recognition and tailored management for improved outcomes.

## Abstract

Small bowel obstruction (SBO) secondary to enterolithiasis in the setting of small bowel diverticulosis is rare, and diagnosis can be challenging. Enteroliths may cause complications including diverticulitis, perforation, and obstruction, typically requiring surgical removal. An 83-year-old woman presented with abdominal pain, vomiting, and constipation. CT imaging demonstrated an intraluminal lesion at the duodenojejunal junction adjacent to an inflamed duodenal diverticulum, consistent with diverticulitis and partial SBO. Initial conservative management included nasogastric decompression, intravenous antibiotics, and parenteral nutrition. Serial imaging showed migration of the intraluminal mass to the proximal jejunum, but persistent obstruction prompted laparotomy and enterotomy, revealing an inspissated food bezoar. Enterolith-induced SBO and diverticulitis is an uncommon but important differential in elderly patients presenting with obstructive symptoms. While conservative management may be attempted in select patients, progression to surgery is frequently required. Early recognition and tailored management can improve outcome.