The stomach begins at the gastrooesophageal junction and ends at the pylorus. The greater curvature forms the left and convex border of the stomach, and the lesser curvature forms the right and concave border of the stomach (Fig. 1a). It is divided into four parts: the cardia, fundus, body and antrum. The gastric wall is divided into fi ve layers: mucosa, submucosa, muscularis externa, subserosa and serosa.
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