VeinsSaphenous VeinPortal VeinVaricose VeinsFemoral VeinPulmonary VeinsJugular VeinsMesenteric VeinsRenal VeinsUmbilical VeinsIliac VeinHepatic VeinsPopliteal VeinSubclavian VeinSplenic VeinCerebral VeinsRetinal VeinAzygos VeinBrachiocephalic VeinsAxillary VeinRetinal Vein OcclusionVenous ThrombosisPhlebographyVenous InsufficiencyVena Cava, InferiorGraft Occlusion, VascularUltrasonography, Doppler, DuplexHuman Umbilical Vein Endothelial CellsVascular PatencyLegThrombophlebitisVascular Surgical ProceduresEndothelium, VascularTime FactorsVascular GraftingTreatment OutcomeCatheter AblationVenous PressureConstriction, PathologicVenae CavaeUltrasonography, Doppler, ColorSclerotherapyCells, CulturedAnastomosis, SurgicalArteriovenous Shunt, SurgicalVenous ValvesLiver CirculationTissue and Organ HarvestingHypertension, PortalLigationVaricose UlcerPortal SystemPulmonary Veno-Occlusive DiseaseEndothelial CellsMuscle, Smooth, VascularAtrial FibrillationVein of Galen MalformationsPolytetrafluoroethyleneCatheterization, Central VenousUpper Extremity Deep Vein ThrombosisArteriovenous FistulaFemoral ArteryTomography, X-Ray ComputedDogsBlood Vessel ProsthesisThrombosisFollow-Up StudiesHeart AtriaCatheterization, PeripheralRegional Blood FlowVena Cava, SuperiorPostoperative ComplicationsHyperplasiaProspective StudiesBlood Flow VelocityHepatic ArteryArteriesPulmonary EmbolismSignal TransductionSclerosing SolutionsLiverRetrospective StudiesLower ExtremityIschemiaMolecular Sequence DataLaser TherapyAngiographyUltrasonography, DopplerVascular DiseasesAneurysmBudd-Chiari SyndromePopliteal ArteryRecurrenceTunica IntimaRabbitsVascular MalformationsPhlebitisReoperationCatheterizationAnticoagulants