Takayasu ArteritisArteritisGiant Cell ArteritisArteritis Virus, EquineTemporal ArteriesPolymyalgia RheumaticaArterivirus InfectionsPolyarteritis NodosaHLA-B52 AntigenAortic Arch SyndromesHorse DiseasesBlood SedimentationAortitisArterivirusPrednisoloneSubclavian ArteryHorsesSubclavian Steal SyndromeAxillary ArteryBiopsyOptic Neuropathy, IschemicAngiographyMucocutaneous Lymph Node SyndromeStrongyle Infections, EquineBrachiocephalic TrunkVasculitisVasculitis, Central Nervous SystemAdrenal Cortex HormonesMagnetic Resonance AngiographyAortographyAnti-Inflammatory AgentsLactobacillus caseiGlucocorticoidsAneurysmArachnoiditisAIDS Arteritis, Central Nervous SystemPrednisoneMethylprednisoloneInfarctionRetinal Artery OcclusionBlindnessAortic AneurysmAdie SyndromeRenal ArteryTogaviridaeAorta, AbdominalVasa VasorumUltrasonography, Doppler, ColorArterial Occlusive DiseasesTomography, X-Ray ComputedAmaurosis FugaxVertebral ArteryAortic Valve InsufficiencyVaccines, MarkerAortaAorta, ThoracicRetrospective StudiesArteriesScalp