Duplications of the stomach account for only 3.8% of gastrointestinal duplication, mainly discovered during first year of life. Etiopathogenesis is unknown. The most widely accepted theory is recannalization with fusion of longitudinal epithelial
fold.
The most frequent presented symptoms and signs include gastric outlet obstruction with vomiting, and palpable mass in the epigatric area. An upper gatrointestinal series usually reveals evidence of extrinsic mass effect of intramural lesion. An
abdominal ultrasonographic findings is cystic mass lesion with double layer. Histologically, the wall of intramural cyst is composed of orderly layers of alimentary mucosa, submucosa, and muscle fibers. Recommended management is complete excision
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simple closure of duplication without violation of the gastric lumen.
In this case, 3-day old male newborn suffered from symptoms of gastric outlet obstruction, multiple gastric duplication cysts were found in pyloric canal and greater curvature. The cystic wall was composed with typical 3 layers of gastric mucosa,
submucosa, and muscle fibers. Surgical excision was successfully done.
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