Budd-Chiari SyndromeRadiology, InterventionalVenous ThrombosisPortasystemic Shunt, Transjugular IntrahepaticPortal VeinThrombosisSyringomyeliaHypertension, PortalHypertensionVeinsThrombophlebitisForamen MagnumFemoral VeinPortal SystemHypertension, PulmonaryIliac VeinUpper Extremity Deep Vein ThrombosisPhlebographyMesenteric VeinsSplenic VeinRenal VeinsAnticoagulantsPulmonary EmbolismVaricose VeinsJugular VeinsSaphenous VeinPlatybasiaEncephalocelePopliteal VeinSubclavian VeinCranial Fossa, PosteriorSinus Thrombosis, IntracranialIntracranial ThrombosisCoronary ThrombosisPortal PressureVena Cava, InferiorHypertension, RenalFibrin Fibrinogen Degradation ProductsTreatment OutcomeMeningomyeloceleHeparin, Low-Molecular-WeightBlood PressureAxillary VeinThrombophiliaRisk FactorsDecompression, SurgicalHepatic VeinsPostthrombotic SyndromeCerebral VeinsPortasystemic Shunt, SurgicalCarotid Artery ThrombosisRetrospective StudiesUltrasonography, Doppler, DuplexHypertension, RenovascularAntihypertensive AgentsFollow-Up StudiesPulmonary VeinsEsophageal and Gastric VaricesVenous ThromboembolismSubarachnoid SpaceHeparinDecompressive CraniectomyTime FactorsMagnetic Resonance ImagingLiver CirculationTomography, X-Ray ComputedProtein S DeficiencyFactor VProspective StudiesLegThromboembolismThrombectomyHypertension, MalignantVena Cava FiltersFibrinolytic AgentsWarfarinCerebrospinal Fluid PressurePostoperative ComplicationsOsteotomyPelvic BonesSpinal CanalMesenteric Vascular OcclusionPregnancy Complications, CardiovascularPlethysmography, ImpedanceLiver CirrhosisPostphlebitic SyndromeStockings, CompressionIntermittent Pneumatic Compression DevicesHemorrhageSplenorenal Shunt, SurgicalUltrasonography, DopplerSplenectomyOccipital BonePortacaval Shunt, SurgicalUmbilical VeinsHepatic ArteryLiver TransplantationActivated Protein C ResistanceThrombolytic TherapyGastrointestinal Hemorrhage