外部性脑积水(External Hydrocephalus,EH)是发生于婴儿期中少见的良性、自愈性疾病。目前尚无本病发病率的报道。近年来国內文献报道已达260例。由于临床医生缺乏对此病认识,常与硬脑膜下积液、脑萎缩相混淆。 病因及发病机制 一、命名与定义 外部性脑积水由Dandy于1917年首次提出。由于许多学者对此病认识不一致,提法及名称不一,如假性积水——巨头、婴儿硬 External Hydrocephalus (EH) is a rare, benign, self-healing disease that occurs in infancy. There is no report of the incidence of this disease. In recent years, the domestic literature has reached 260 cases. Due to lack of understanding of the disease clinicians, often associated with subdural effusion, brain atrophy confused. Etiology and pathogenesis First, the naming and definition External hydrocephalus was first proposed by Dandy in 1917. Because many scholars do not understand the disease inconsistently, the name and name vary, such as pseudo-hydrofoil - giant, infant hard