Preoperative CarePreoperative PeriodPostoperative PeriodPostoperative ComplicationsTreatment OutcomeProspective StudiesRetrospective StudiesIncidenceTime FactorsFollow-Up StudiesRisk FactorsRectal NeoplasmsTomography, X-Ray ComputedPredictive Value of TestsPrognosisPostoperative CareCohort StudiesRisk AssessmentSurgical Procedures, ElectiveNeoplasm StagingNeoadjuvant TherapyIntraoperative CareSurvival RateCombined Modality TherapyIntraoperative ComplicationsIntraoperative PeriodAdenocarcinomaCardiac Surgical ProceduresInfant, NewbornReoperationRegistriesSurvival AnalysisSurgical Procedures, OperativeChi-Square DistributionPremedicationAge DistributionMagnetic Resonance ImagingMultivariate AnalysisCoronary Artery BypassPerioperative CareLogistic ModelsSensitivity and SpecificityPain, PostoperativeNeurosurgical ProceduresKaplan-Meier EstimateSurgical Wound InfectionRecurrenceEsophageal NeoplasmsSeverity of Illness IndexNeoplasm Recurrence, LocalVascular Surgical ProceduresBlood Loss, SurgicalDigestive System Surgical Procedures