<prompt> Risk factor for carcinoma stomach are all, EXCEPT:Blood group APostgastrectomyAdenomatous polypAtrophic gastritis  <response>: Impoant quotes Maingots 10e, Page 1007: In several large studies from the scandinan countries, it was found that there is no correlation between gastric cancer and blood group A. Ref: Maingots 10e, Page 1007. 