Colorectal SurgeryRectumRectal DiseasesColectomyColorectal NeoplasmsColonic DiseasesDigestive System Surgical ProceduresAnastomotic LeakPremedicationSurgical Procedures, ElectiveColonLaparoscopyHand-Assisted LaparoscopySurgical Wound InfectionPostoperative ComplicationsSurgical SpongesCatharticsPerioperative CareCefotetanAnastomosis, SurgicalPreoperative CareEmbalmingPostoperative CareInfusions, IntralesionalLength of StayTreatment OutcomeRectal NeoplasmsIntraoperative CareLearning CurveDiverticulitisProspective StudiesIleusIntraoperative PeriodRoboticsPostoperative PeriodCell DivisionSurgical StaplingAdenomaAntibiotic ProphylaxisFluid TherapyTime FactorsRetrospective StudiesIntraoperative ComplicationsMetronidazoleColonoscopyColorectal Neoplasms, Hereditary NonpolyposisFollow-Up StudiesRisk FactorsPain, PostoperativeRecovery of FunctionColonic PolypsClinical CompetenceColonic NeoplasmsDouble-Blind MethodAdenocarcinomaStatistics, NonparametricBariatric SurgeryChi-Square DistributionSigmoidoscopyGeneral SurgeryPrognosisAdenomatous PolypsNeoplasm StagingFluorouracil