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Updated: Jul 10, 2026

A Mouse Model of Intestinal Partial Obstruction
Published on: March 5, 2018
A large Brunner's gland hamartoma causing gastrointestinal bleeding and obstruction
L C F de Nes1, F Ouwehand, S H A Peters
1Division of Gastrointestinal Surgery, Flevoziekenhuis, Almere, The Netherlands. lcdenes@amc.uva.nl
Context:
Clinical symptoms of Brunner's gland (BG) hamartoma are rare. Most lesions are small and asymptomatic. Symptomatic BG hamartoma may mimic a malignancy of the duodenal-pancreatic area. Though standard mucosal biopsies are inferiorly diagnostic due to normal duodenal mucosa surrounding, a biopsy was indicated in this case.
Case Report:
We report the case of a 37-year-old man with a large BG hamartoma mimicking a malignancy. Preoperatively the biopsy led to an inconclusive diagnosis. Due to its large size and its presence of symptoms, a surgical excision was performed.
Conclusion:
BG hamartoma may be a rare indication for surgery.
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