组织细胞增生症X(下简称HX)旧称网状内皮细胞增生症,是一种比较少见但又多发于儿童的疾病,迄今病因来明,可能是与免疫缺陷有关的网状内皮系统的一种特发性增生过程。常见的HX分为四型,即为勒雪氏病、韩薛柯氏综合症、骨嗜酸性肉芽肿及其中间型,此外还有罕见的单器官型,实际上它们是一类疾病的不同表现或病期,相互移行无明 Histopathic X (formerly referred to as HX), formerly known as reticuloendotheliosis, is a rare but frequent disease in children, the etiology so far, may be associated with immune defects in a reticuloendothelial system Idiopathic hyperplasia process. Common HX is divided into four types, namely, Leser’s disease, Han Xue Xue Keshi syndrome, eosinophilic granulomatosis and its intermediate type, in addition to rare single organ type, in fact they are a different type of disease Performance or disease, mutual migration is unknown