阿米巴原虫是引起人体阿米巴病的原生动物,其主要致病种类是溶组织内阿米巴(Entamoebahistolytica),它寄生在大肠,可引起严重的阿米巴痢疾。如果它的滋养体自肠道侵入血管并随血循环移行到身体各部,则能形成肠外阿米巴病。还有一些营自由生活的致病性阿米巴,可引起脑膜脑炎。本文拟就近十年内国外主要医学杂志上报道的肠外阿米巴病罕例作一综述。一、阿米巴性脑膜脑炎早在1965年,Fowler在澳大利亚首次报道:某些营自由生活的致病性阿米巴原虫能够造成原发性脑膜脑炎。继之,世界各地陆续都有报道,迄今已达百例之多,我国也有一例报告。这些阿米巴广泛存在于土壤、湖水、河流及空 Protozoan amoeba is a protozoan that causes amebiasis in humans. Its main causative species is Entamoeba histolytica, which is parasitic in the large intestine and causes severe amoebic dysentery. If its trophozoites invade the bloodstream from the gut and migrate to the various parts of the body with the bloodstream, it can develop an extrameanoma. There are some free-living pathogenic amoeba can cause meningoencephalitis. This article is intended to review the rare cases of parenteral amoebiasis reported in major foreign medical journals in recent ten years. First, amoebic meningoencephalitaceae As early as 1965, Fowler first reported in Australia: Some camp free-living pathogenic amoeba parasite can cause primary meningoencephalitis. In succession, there are reports all over the world, reaching as many as 100 cases so far. There is also a report in our country. These amoeba widespread in the soil, lake, river and empty