Intracranial Embolism and ThrombosisIntracranial EmbolismPulmonary EmbolismThrombosisPortal VeinVenous ThrombosisHypertension, PortalEmbolismEmbolism, FatPortal SystemEmbolism, ParadoxicalCoronary ThrombosisSinus Thrombosis, IntracranialPortal PressureIntracranial ThrombosisAnticoagulantsCarotid Artery ThrombosisEmbolism, Amniotic FluidPhlebographyEmbolism, CholesterolThromboembolismFemoral VeinMesenteric VeinsIliac VeinLiver CirculationVena Cava, InferiorEmbolectomyVena Cava FiltersSagittal Sinus ThrombosisHeparinSplenic VeinThrombophiliaFibrinolytic AgentsTomography, X-Ray ComputedTreatment OutcomeVentilation-Perfusion RatioUpper Extremity Deep Vein ThrombosisHeparin, Low-Molecular-WeightPortasystemic Shunt, SurgicalVenous ThromboembolismThrombectomyAngiographyHemorrhageWarfarinRisk FactorsHepatic ArteryEsophageal and Gastric VaricesRetrospective StudiesAcute DiseaseFactor VPopliteal VeinTime FactorsCerebral VeinsThrombolytic TherapyHepatic VeinsThrombophlebitisFollow-Up StudiesBlood CoagulationProspective StudiesAntiphospholipid SyndromePlatelet Aggregation InhibitorsRecurrenceJugular VeinsHemostasisEchocardiography, TransesophagealCavernous Sinus ThrombosisPortographyLiver CirrhosisBudd-Chiari SyndromeRenal VeinsStentsSubclavian VeinPortacaval Shunt, SurgicalFatal OutcomeProthrombinLateral Sinus ThrombosisBleeding TimeTomography, Spiral ComputedProtein S DeficiencyEmbolism and ThrombosisLiverFibrin Fibrinogen Degradation ProductsPlatelet AggregationForamen Ovale, PatentUltrasonography, Doppler, DuplexVeinsSplenorenal Shunt, SurgicalCatheterization, Central VenousProtein C DeficiencyPulmonary ArteryBlood PlateletsDrug-Eluting StentsGastrointestinal HemorrhageLiver TransplantationIncidenceAntibodies, AntiphospholipidMesenteric Vascular OcclusionEnoxaparinRisk AssessmentAspirin