Systemic VasculitisVasculitisPolyarteritis NodosaAntibodies, Antineutrophil CytoplasmicChurg-Strauss SyndromeWegener GranulomatosisRetinal VasculitisMyeloblastinAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisArteritisMucocutaneous Lymph Node SyndromeVasculitis, Leukocytoclastic, CutaneousPurpura, Schoenlein-HenochMicroscopic PolyangiitisCogan SyndromeCryoglobulinemiaVasculitis, Central Nervous SystemAutoantibodiesPeroxidaseBehcet SyndromeSerine EndopeptidasesOtorhinolaryngologic DiseasesImmunoglobulins, IntravenousAutoimmune DiseasesGlomerulonephritisClassificationImmunosuppressive AgentsAutoantigensPrednisoloneGiant Cell ArteritisNeutrophilsSkin Diseases, VascularCollagen DiseasesLeukemia, Myelomonocytic, ChronicRheumatoid VasculitisMethylprednisoloneCyclophosphamideEnzyme-Linked Immunosorbent AssayRetrospective StudiesImmunoglobulin GLupus Erythematosus, SystemicRespiratory BurstArthritis, RheumatoidTreatment OutcomeSeverity of Illness IndexFluorescent Antibody Technique, IndirectKidney DiseasesGlucocorticoidsAntibodies, MonoclonalPrognosisBiological MarkersInternational Classification of DiseasesFollow-Up StudiesAlgorithmsAntibody SpecificityCase-Control StudiesDrug Therapy, CombinationEndothelium, VascularKidneyTumor Necrosis Factor-alphaCytoplasmPolymorphism, GeneticCryoglobulinsProspective StudiesGenetic Predisposition to DiseaseReproducibility of ResultsPattern Recognition, AutomatedPurpuraArtificial IntelligenceTakayasu Arteritis