Esophagealandgastriccancer(GC)arerelatedtoobesityandbariatricsurgery.Riskfactors,suchasgastroesophagealrefluxandHelicobacterpylori,mustbeinvestigatedandtreatedinobesepopulation.Aftersurgery,GCreportsareanecdotalandtreatmentisnotstandardized.ThisreviewaimstodiscussGCrelatedtoobesitybeforeandafterbariatricsurgery.