HemangiomaHemangioma, CavernousHemangioma, CapillaryFacial NeoplasmsNeurocutaneous SyndromesHemangiosarcomaVascular NeoplasmsNeoplasms, Vascular TissueHemangioendotheliomaHemangioma, Cavernous, Central Nervous SystemKlippel-Trenaunay-Weber SyndromeOrbital NeoplasmsSulfur HexafluorideLiver NeoplasmsSpinal NeoplasmsFocal Nodular HyperplasiaSkin NeoplasmsPort-Wine StainSkin Diseases, VascularEpidural NeoplasmsEnchondromatosisPulmonary Sclerosing HemangiomaEyelid NeoplasmsArteriovenous MalformationsTechnetiumTomography, X-Ray ComputedContrast MediaSplenic NeoplasmsUltrasonographyLymphangiomaEar DiseasesAngiomatosisCystadenomaThoracic NeoplasmsSturge-Weber SyndromeEye AbnormalitiesTechnetium Tc 99m Aggregated AlbuminJaundice, Chronic IdiopathicMagnetic Resonance ImagingLasers, DyePropranololDisseminated Intravascular CoagulationVertebroplastyInfant, NewbornHistiocytoma, Benign FibrousInjections, IntralesionalTechnetium Tc 99m PentetateSyndromeTriamcinoloneSodium Pertechnetate Tc 99mCerebellopontine AngleTechnetium Tc 99m Sulfur ColloidNeoplasms, Multiple PrimaryAngiographyRetinal Neoplasmsvon Hippel-Lindau DiseaseThoracic VertebraeDog DiseasesImage EnhancementSpinal Cord NeoplasmsAbnormalities, MultipleHead and Neck NeoplasmsCystsGentian VioletSoft Tissue NeoplasmsTreatment OutcomeSpinal Cord CompressionAntigens, CD31Ultrasonography, Doppler, ColorInterferon InducersFluorocarbonsCyclohexanesAngiopoietin-2Liver DiseasesAdrenergic beta-AntagonistsRetrospective StudiesRetinopathy of PrematurityErythrocytesCarcinoma, HepatocellularImmunohistochemistryBlood VesselsVon Hippel-Lindau Tumor Suppressor ProteinSensitivity and SpecificityEmbolization, TherapeuticNeovascularization, PathologicBrain NeoplasmsVascular Endothelial Growth Factor AGadolinium DTPAEndothelium, VascularFollow-Up StudiesHepatectomy