Vena Cava, InferiorVena Cava, SuperiorThrombosisVena Cava FiltersSuperior Vena Cava SyndromeVenous ThrombosisVenae CavaeAzygos VeinPhlebographyRenal VeinsCoronary ThrombosisIliac VeinSinus Thrombosis, IntracranialInferior ColliculiBudd-Chiari SyndromeHepatic VeinsIntracranial ThrombosisVascular NeoplasmsPulmonary EmbolismCarotid Artery ThrombosisBrachiocephalic VeinsVascular MalformationsAnticoagulantsFemoral VeinPortal VeinTomography, X-Ray ComputedDevice RemovalTreatment OutcomeJugular VeinsHeart AtriaCatheterization, Central VenousSubclavian VeinUpper Extremity Deep Vein ThrombosisVeinsThrombectomySagittal Sinus ThrombosisConstriction, PathologicMesenteric VeinsLeiomyosarcomaStentsIntracranial Embolism and ThrombosisTime FactorsFollow-Up StudiesRetrospective StudiesPulmonary VeinsCoronary SinusMesenteric Artery, InferiorMagnetic Resonance ImagingThrombophiliaThromboembolismVenous PressureAnastomosis, SurgicalHeparinFibrinolytic AgentsHeparin, Low-Molecular-WeightDogsProsthesis ImplantationVascular Surgical ProceduresVenous ThromboembolismVascular DiseasesHeterotaxy SyndromeCatheterizationBlood Vessel Prosthesis ImplantationScimitar SyndromePolytetrafluoroethyleneHeart Bypass, RightCerebral VeinsAngiographySitus InversusUltrasonography, Doppler, DuplexBlood Vessel ProsthesisCatheter AblationAntiphospholipid SyndromeCatheters, IndwellingVascular PatencyBlood CoagulationProspective StudiesRisk FactorsHeart Defects, CongenitalHeart NeoplasmsFactor VPopliteal VeinEquipment FailureSplenic VeinFatal OutcomeHemorrhageHemostasisAtrial FlutterCavernous Sinus ThrombosisRecurrenceThrombolytic TherapyConstrictionLiver TransplantationProsthesis DesignIncidental FindingsForeign-Body MigrationUltrasonography, Doppler, ColorPortacaval Shunt, SurgicalRetroperitoneal NeoplasmsPlatelet Aggregation Inhibitors