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葡萄胎有胎盘无胎儿

葡萄胎有胎盘无胎儿

图示:葡萄胎。不常见的,受精时母性染色体丢失,核型为46XX, 仅由父性染色体构成,虽然能够形成胎盘,但不能形成胎儿,因此形成葡萄状肿胀的绒毛组织。

This is a hydatidiform mole. Molar pregnancies are uncommon and occur when there is fertilization of an ovum by a sperm but loss of maternal chromosomes, leaving a 46XX karyotype composed only of paternal chromosomes, enough to form a placenta, but not a fetus. The result is a mass of tissue with grape-like swollen villi.


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