Mucosa gástrica heterotópica en el esófago proximal. Una causa desconocida de disfagia

Heterotopic gastric mucosa in the proximal third of the esophagus is an embryological lesion that has been described in between 1.1% and 10% of gastroscopies. Although most of these lesions are asymptomatic, they can sometimes be accompanied by upper esophageal symptoms due to acid secretion. We present a case of heterotopic gastric mucosa in the proximal third of the esophagus with dysphagia. pH-metry demonstrated acid secretion by these lesions, which was resolved by treatment with proton pump inhibitors.