系统性血管炎的分类

系统性血管炎是一组以血管炎症为特征的全身性自身免疫性疾病，其临床表现和病理特征复杂多变，取决于受累血管的部位和类型。根据主要受累血管的类型，2012年Chapel Hill共识会议（CHCC）对多种血管炎进行了命名和定义，是目前使用最为广泛的血管炎命名系统。文章详细阐述了系统性血管炎的分类，并对系统性血管炎的定义、病因、流行病学和诊断进行了概述。

Classification of systemic vasculitis

Systemic vasculitis is a heterogeneous group of systemic autoimmune diseases characterized by inflammation of vessels. The clinical and pathological features of vasculitis are variable and depend on the site and type of blood vessels affected. The 2012 Chapel Hill Consensus Conference(CHCC) has developed one of the most widely used nomenclature systems which specifies the names and definitions for most forms of vasculitis based on the type of vessels predominantly involved. This article is focused on the classification of systemic vasculitis,and provides an overview of the definition,etiology, epidemiology and diagnosis of systemic vasculitis.