Gastrointestinal: Gastric outlet obstruction caused by a hamartomatous inverted polyp and an ectopic pancreas.
S AshinaArata SakaiAtsuhiro MasudaM TsujimaeTakashi KobayashiY ShiomiH ShiomiS KanajiT ItohY KakejiY KodamaPublished in: Journal of gastroenterology and hepatology (2020)
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