摘要息肉样脉络膜血管病变(PCV)是以脉络膜异常分支状血管网及末端息肉样血管扩张病灶为特点的眼底疾病;根据其眼底表现、病变部位、影像检查特征以及疾病进程可将其分为不同类型.其中,根据眼底表现可分为出血型、渗出型;根据病变部位可分为黄斑型、视盘旁型、黄斑区以外型、混合型;根据吲哚青绿血管造影特征可分为1型、2型;根据疾病进程可分为早期型、晚期型.不同类型与老年性黄斑变性易感因子2/高温必需蛋白A1基因、C2、补体因子B基因、补体因子H、弹性蛋白基因等之间存在不同的相关性,其治疗反应及预后也存在较大差异.进一步重视并加强PCV临床特征归类分型研究,探讨不同类型的遗传特性、影响因素以及与治疗预后的关系,对于提高PCV诊断、鉴别诊断水平以及针对不同类型个体化治疗的有效性均具有重要意义.

abstractsPolypoidal choroidal vasculopathy (PCV) is a fundus disease characterized by choroidal anomalous branch vascular network and terminal polypoidal dilatation.According to its fundus feature,lesion location,imaging feature and disease progression,PCV can be divided into different types or stages.It can be divided into hemorrhage and exudation PCV according to the fundus features,into macular,peripapillary,periphery and mixed types according to the lesion locations.It can also be divided into type 1 and 2 according to the ICGA (indocyanine green angiography) manifestations,and can be classified as early stage and late stage according to disease progression.There were different correlations between different types of PCV and some risk genetic loci,such as ARMS2 (age-related macular degeneration factor 2)/HTRA1 (high temperature essential protein A1),C2,complement factor B,complement factor H,and elastin genes.The response to therapy and prognosis are also different between different types.It is important to further study the clinical classification of PCV,to explore the genetic characteristics,influencing factors and treatment or prognosis features of different types of PCV.The results will improve the differential diagnosis of PCV,and the effectiveness of individualized treatment.