Introduction
Duodenal lesions are uncommon findings in patients submitting to
esophagogastroduodenoscopy (EGD), with an incidence variable from less
than 1% to 5% 1,2.
The most common lesions requiring resection are duodenal adenomas, which
should be differentiated from other mucosal lesions, such as heterotopic
gastric mucosa, and submucosal lesions, such as carcinoids and
gastrointestinal stromal tumours. Gastric heterotopia is a benign and
often asymptomatic condition consisting on the presence of gastric
tissue in a place where is not normally found and it has been described
in several locations through the gastrointestinal tract. Gastric
heterotopia in duodenum usually is an incidental finding and it is most
commonly found as multiple small polyps in the duodenal bulb2. In this report, we describe a rare case of a
patient with gastric heterotopia in the third duodenal portion, treated
with endoscopic resection under laparoscopic vision.