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在中欧和北欧,完全性和部分性葡萄胎的发生率为1:2270及1:27900。完全性葡萄胎为成熟的无核卵细胞经双精子或经单倍体精子(较多见)基因组倍增的后果。此时,完全性葡萄胎仅含有父体的核DNA和仅有母体的线粒体DNA。 部分葡萄胎则通常呈三倍体核型。 葡萄胎妊娠而伴有胎儿者极为罕见,其发现率(不分部分性和完全性葡萄胎)据报道为1。10000～20000和1:100000。其中多数为多胎妊娠伴葡萄胎及正常的受孕。
In Central and Northern Europe, complete and partial mole occurrences were 1: 2270 and 1: 27900. Complete hydatidiform mole is a consequence of doubled or doubled haploid sperm (more common) genomic doubling of mature, non-nuclear egg cells. At this point, the complete mole contains only the parent’s nuclear DNA and the mother’s mitochondrial DNA only. Some hydatidiform mole is usually triploid karyotype. Mole pregnancy with fetus is extremely rare, the detection rate (regardless of partial and complete hydatidiform mole) is reported as 1.10000 ~ 20000 and 1: 100000. The majority of multiple pregnancies with hydatidiform mole and normal pregnancy.