Case report
A 49-year-old man presented with a complaint of abdominal distension
with decreased appetite for one month. The patient had no abdominal
pain, hematemesis, melena, or other symptoms. There was no history of
weight loss or family history of gastrointestinal disease. Other vital
signs were normal. Abdominal physical examination showed no obvious
abnormalities. Laboratory tests showed normal blood routine and tumor
markers. Fecal occult blood was negative. Gastroscopy revealed a
mucosal protuberous lesion in the
greater curvature of the stomach, about 2.0cm×3.0cm in size, extending
to the pyloric canal, which was resected by high-frequency electric coil
(Fig.1). The pathological diagnosis was ectopic gastroduodenal mucosa
with adenomatous hyperplasia.