ProctoscopyEndoscopyEndoscopy, GastrointestinalDuodenoscopyCarcinoid TumorBrunner GlandsViscosupplementsGastroscopyEsophagoscopyDuodenal NeoplasmsColonoscopyElectrocoagulationEndosonographyHemostasis, EndoscopicStomach NeoplasmsAmpulla of VaterCommon Bile Duct NeoplasmsGastrectomyGastric MucosaTreatment OutcomeEndoscopy, Digestive SystemRectal NeoplasmsEsophageal NeoplasmsGastrointestinal NeoplasmsColonic PolypsLeiomyomaRectumRetrospective StudiesNeoplasm Recurrence, LocalBiopsyHepatectomyColonic NeoplasmsAdenocarcinomaFollow-Up StudiesAdenomaIntestinal MucosaTime FactorsPneumonectomyTransurethral Resection of ProstateLiver NeoplasmsPancreatectomyPostoperative ComplicationsDigestive System Surgical ProceduresColectomySurvival RateNeoplasm StagingTomography, X-Ray ComputedPrognosisCombined Modality TherapyLaparoscopyBile Duct NeoplasmsNeurosurgical ProceduresPancreaticoduodenectomyPancreatic NeoplasmsReconstructive Surgical ProceduresAnastomosis, SurgicalPulmonary Surgical ProceduresCarcinoma, HepatocellularColorectal NeoplasmsPreoperative CareThoracotomyLung NeoplasmsSurvival AnalysisCholangiocarcinomaRadiotherapy, AdjuvantBile Ducts, IntrahepaticEsophagectomyChemotherapy, AdjuvantReoperationDisease-Free SurvivalBrain NeoplasmsThoracic NeoplasmsPostoperative PeriodRetroperitoneal NeoplasmsLymph Node ExcisionThoracic Surgery, Video-AssistedSurgical StaplingMagnetic Resonance ImagingNeoadjuvant TherapyBone NeoplasmsSarcomaShort Bowel SyndromeNeoplasm InvasivenessBlood Loss, SurgicalLymphatic MetastasisKaplan-Meier EstimateColostomyProspective StudiesColonic DiseasesVascular NeoplasmsColorectal SurgerySurgical FlapsSkull Base NeoplasmsNeuronavigationChondrosarcomaAnastomotic LeakIleumThoracic WallPortal VeinBiliary Tract Surgical Procedures