Portasystemic Shunt, Transjugular IntrahepaticPortal VeinVenous ThrombosisHypertension, PortalThrombosisJugular VeinsBudd-Chiari SyndromeHypertensionEsophageal and Gastric VaricesVeinsThrombophlebitisPhlebographyFemoral VeinPortal SystemAscitesHypertension, PulmonaryIliac VeinGastrointestinal HemorrhageUpper Extremity Deep Vein ThrombosisPortal PressureVaricose VeinsHepatic VeinsMesenteric VeinsPortographySplenic VeinLiver CirrhosisTreatment OutcomeVena Cava, InferiorRenal VeinsAnticoagulantsPulmonary EmbolismSaphenous VeinPopliteal VeinSubclavian VeinHepatic EncephalopathyLiver TransplantationSinus Thrombosis, IntracranialParacentesisIntracranial ThrombosisRetrospective StudiesCoronary ThrombosisSplenorenal Shunt, SurgicalHepatorenal SyndromeSuperficial Back MusclesTime FactorsHydrothoraxHypertension, RenalTomography, X-Ray ComputedFibrin Fibrinogen Degradation ProductsStentsHeparin, Low-Molecular-WeightProspective StudiesObserver VariationFollow-Up StudiesBlood PressureAxillary VeinThrombophiliaRisk FactorsReproducibility of ResultsSclerotherapyPostthrombotic SyndromeCerebral VeinsPortasystemic Shunt, SurgicalPostoperative ComplicationsHemorrhageRecurrenceCarotid Artery ThrombosisLiver FailureUltrasonography, Doppler, DuplexHypertension, RenovascularLiver DiseasesAntihypertensive AgentsPulmonary VeinsVenous ThromboembolismLigationHeparinHepatic Veno-Occlusive DiseaseLiver Cirrhosis, AlcoholicRadiography, InterventionalLiver CirculationProtein S DeficiencyFactor VLegThromboembolismThrombectomyHypertension, MalignantLiverVena Cava FiltersFibrinolytic AgentsWarfarinCatheterizationCyanoacrylatesMesenteric Vascular OcclusionPregnancy Complications, CardiovascularPlethysmography, ImpedancePostphlebitic SyndromePuncturesStockings, CompressionIntermittent Pneumatic Compression DevicesFeasibility Studies