[Luteinized cystic hyperplasia of the ovaries in normal pregnancy. Diagnostic and nosological problems]

The authors report a new case of luteinized hyperplastic cystic ovary in a pregnancy that was in every other respect normal. This syndrome of ovarian hyperstimulation is most often found in patients suffering from trophoblastic diseases or following iatrogenic accidents. It is exceptionally rare in a non-molar pregnancy. The comparison with the other form of ovarian hyperactivity that gives rise to a luteoma of pregnancy emphasizes the questions that have to be answered of the hormonal mechanism leading to maternal and fetal virilisation that complicate these two pseudo-tumours and how they are handed on from one generation to the other, and what the mechanisms is of placental HCG in this abnormal condition.