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, VascularVascular GraftingTreatment OutcomeCatheter AblationVenous PressureConstriction, PathologicVenae CavaeUltrasonography, Doppler, ColorSclerotherapyAnastomosis, SurgicalTime FactorsArteriovenous Shunt, SurgicalVenous ValvesLiver CirculationTissue and Organ HarvestingHypertension, PortalLigationVaricose UlcerPortal SystemPulmonary Veno-Occlusive DiseaseAtrial FibrillationVein of Galen MalformationsPolytetrafluoroethyleneCatheterization, Central VenousUpper Extremity Deep Vein ThrombosisArteriovenous FistulaBlood Vessel ProsthesisFemoral ArteryMuscle, Smooth, VascularThrombosisTomography, X-Ray ComputedCatheterization, PeripheralEndothelial CellsVena Cava, SuperiorFollow-Up StudiesHeart AtriaRegional Blood FlowPostoperative ComplicationsDogsHepatic ArteryPulmonary EmbolismCells, CulturedHyperplasiaBlood Flow VelocitySclerosing SolutionsLower ExtremityProspective StudiesArteriesLaser TherapyRetrospective StudiesIschemiaUltrasonography, DopplerAneurysmAngiographyBudd-Chiari SyndromePopliteal ArteryVascular DiseasesVascular MalformationsRecurrenceTunica IntimaPhlebitisReoperationLiverAnticoagulantsCatheterizationStockings, CompressionEndoscopyHepatectomy