Portal VeinVenous ThrombosisPortal SystemVeinsCarbadoxHypertension, PortalLiver CirculationMesenteric VeinsThrombosisVaricose VeinsVenous InsufficiencyLiverSaphenous VeinPortasystemic Shunt, SurgicalHepatic VeinsFemoral VeinSplenorenal Shunt, SurgicalSplenic VeinHepatic ArteryVaricose UlcerBudd-Chiari SyndromePortal PressurePhlebographyUltrasonography, Doppler, DuplexEmbolism, AirStockings, CompressionIliac VeinLiver TransplantationLiver CirrhosisVenous ValvesLiver NeoplasmsEsophageal and Gastric VaricesThrombophlebitisJugular VeinsGlucoseLegPortacaval Shunt, SurgicalRenal VeinsPulmonary EmbolismSplenectomyUltrasonography, Doppler, ColorCarcinoma, HepatocellularAnticoagulantsTreatment OutcomePulmonary VeinsPopliteal VeinGastrointestinal HemorrhageUpper Extremity Deep Vein ThrombosisTomography, X-Ray ComputedHypersplenismSubclavian VeinPortasystemic Shunt, Transjugular IntrahepaticVena Cava, InferiorProtein S DeficiencyPortographyUltrasonography, DopplerSplanchnic CirculationLiver DiseasesProspective StudiesChemoembolization, TherapeuticRetrospective StudiesPostoperative ComplicationsUmbilical VeinsVascular Surgical ProceduresAnastomosis, SurgicalCerebral VeinsArteriovenous Shunt, SurgicalAxillary VeinProtein C DeficiencyHepatectomySplenomegalyDogsAngiographyDiagnostic Techniques, SurgicalEmbolization, TherapeuticTime FactorsTachyphylaxisSinus Thrombosis, IntracranialLiving DonorsIntracranial ThrombosisSclerotherapyAscitesGasesCoronary ThrombosisChronic DiseaseFollow-Up StudiesRegional Blood FlowLigationFibrin Fibrinogen Degradation ProductsHeparin, Low-Molecular-WeightCoagulation Protein DisordersPreoperative CareRisk FactorsYttrium RadioisotopesPostthrombotic SyndromePurpura, Thrombocytopenic, IdiopathicThrombophiliaInfusions, IntravenousAzygos VeinThrombectomy