Dergiler / Turkish Journal of Gastroenterology / 2018 / Cilt: 29 - Sayı: 2Gastric outlet obstruction by polypoid tumorsHerwig CERWENKADergiTurkish Journal of GastroenterologySayı2018 · Cilt: 29 - Sayı: 2Sayfa243DOI—Özet-