[Pyloric duplication with pancreatic heterotopia (author's transl)]

This is a case report concerning an 11 month old young boy with a pyloric duplication resulting in an acute gastric outlet obstruction. Pyloric duplications are rare anomalies of the gastro intestinal tract, usually cystic and few have been reported with pancreatic heterotopia and cytosteatonecrosis. Pathogenesis is quite uncertain. Most of them are discovered in the first year of life, mimicking an hypertrophic pyloric stenosis or resulting in an emergency like our case. The treatment is surgical and must choose between radical excision with sometimes partial gastrectomy or antro-pylorectomy, and incomplete resection because of its benign condition.