clasificación de las vasculitis en relación al tamaño del vaso afecto

Tabla 3 Clasificación da las vasculitis en relación al tamaño del vaso afecto Types of vessels that are defined as large vessels (A), medium vessels (B), and small vessels (C) in the Chapel Hill Consensus Conference nomenclature system. The kidney is used to exemplify medium and small vessels. Large vessels are the aorta and its major branches and the analogous veins. Medium vessels are the main visceral arteries and veins and their initial branches. Small vessels are intraparenchymal arteries, arterioles, capillaries, venules, and veins. Distribution of vessel involvement by large vessel vasculitis, medium vessel vasculitis, and small vessel vasculitis. Note that there is substantial overlap with respect to arterial involvement, and an important concept is that all 3 major categories of vasculitis can affect any size artery. Large vessel vasculitis affects large arteries more often than other vasculitides. Medium vessel vasculitis predominantly affects medium arteries. Small vessel vasculitis predominantly affects small vessels, but medium arteries and veins may be affected, although immune complex small vessel vasculitis rarely affects arteries. Not shown is variable vessel vasculitis, which can affect any type of vessel, from aorta to veins. The diagram depicts (from left to right) aorta, large artery, medium artery, small artery/arteriole, capillary, venule, and vein. Anti-GBM = anti–glomerular basement membrane; ANCA = antineutrophil cytoplasmic antibody.
De Gran Vaso	Vasculitis que afecta a vasos de gran tamaño en mayor medida que otras formas de vasculitis	Arteritis de células gigantes Arteritis de Takayasu
De mediano vaso	Vasculitis que afecta predominantemente a arterias de mediano tamaño, comprendiendo las areterias viscerales más importante y sus ramificaciones	PAN Síndrome de Kawasaki
De pequeño vaso	vasculitis que afecta predominantemente a vasos de pequeño tamaño incluyendo areterias intraparenquimatosas, arteriolas, capilares y venulas.	Vasculitis asociadas a ANCA Anca con especificidad a mieloperoxidasa Anca con especificidad a proteinasa 3 Anca negativo Vasculitis por inmunocomplejos Vasculitis crioglobulinemica Vasculitis por IgA Vasculitis hipocomplementémica
vasculitis de vasos variables	incluye las vasculitis sin predominancia por afectar a un tipo de vaso	Enfermedad de Behçet Vasculitis del síndrome deCogan
vasculitis de organo único	vasculitis en arterias o venas de cualquier tamaño que no tiene hallazgos que indiquen que es la expresión limitada de una vasculitis sistemica. El órgano afecto y el vaso deben consstar en el nombre (vasculitis cutanea de pequeño vaso)