用光镜和电镜观察了13例烟雾病人中的12例颞浅A和6例脑膜中A,其主要病变是:内膜平滑肌细胞增生,内膜增厚,中膜和内膜肌细胞破坏,浓缩的细胞器散在于肌细胞间和内弹力板内外侧间质,内弹力板断裂。这些变化与烟雾病颈内动脉末端的病变相同,与炎性血管病、动脉粥样硬化不同,是烟雾病固有的病变。烟雾病不仅是脑血管病,颈外A系统亦可受累。 Using light and electron microscopy of 13 cases of smoke patients in 12 cases of temporal superficial A and 6 cases of meningeal A, the main lesions are: intimal smooth muscle cell proliferation, intimal thickening, intimal and endometrial muscle cell destruction, Concentrated organelles scattered in the intramuscular cells and the inner and outer elastic plate interstitial, the inner elastic plate rupture. These changes and the end of the carotid artery lesions of the same carotid artery, and inflammatory angiopathy, atherosclerosis is different, is the inherent disease of moyamoya disease. Moyamoya disease is not only a disease of the cerebrovascular disease, but also a disease of the external A system.