Eosinophilic GranulomaChurg-Strauss SyndromeMicroscopic PolyangiitisWegener GranulomatosisLymphomatoid GranulomatosisAntibodies, Antineutrophil CytoplasmicVasculitisPolyarteritis NodosaMyeloblastinAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisVasculitis, Leukocytoclastic, CutaneousSystemic VasculitisGranulomatosis, OrofacialPeroxidaseImmunosuppressive AgentsNose Deformities, AcquiredGlomerulonephritisCyclophosphamidePrednisolonePlasma ExchangeSerine EndopeptidasesMethylprednisoloneLung DiseasesIleal DiseasesBiopsyVasculitis, Central Nervous SystemGranulomaScleritisAdrenal Cortex HormonesSkin Diseases, VascularGlucocorticoidsAutoantibodiesRecurrenceBronchial DiseasesAntibodies, Monoclonal, Murine-DerivedLaryngostenosisTreatment OutcomeFatal OutcomeUlcerRemission InductionFluorescent Antibody Technique, IndirectRetrospective StudiesOrbital DiseasesHemorrhageNeutrophilsArteritis