双语教学

Explain of Female Genital Pathology

86.Hydatidiform mole, gross

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.

（本图片资料来源自美国犹他大学）