Decidual Cast

Pingili, Radhika; Jackson, Warick
January 2008
Internet Journal of Gynecology & Obstetrics;2008, Vol. 9 Issue 1, p3
Academic Journal
The lining of the pregnant uterus, other than the area taken up by the placenta, is called the decidua. The appearance of the normal lining of the uterus, by the effect of progesterone, can become decidualized .When an area of decidua is shed, it is called a decidual cast because it frequently comes out in the shape of the uterine cavity. Decidual casts have a well-known association with ectopic pregnancies. Decidual cast have also been reported in non-pregnant women as a side effect with the use of human menopausal gonadotrophin (HMG), human chorionic gonadotrophin (HCG) and progestogens . It is uncommon to see a decidual cast with the use of standard dose combined oral contraceptive pill. Membranous dysmenorrhoea is rare and causes intense cramping pain as a result of the passage of intact endometrial cast through an undilated cervix. We report an interesting case of Decidual cast and membranous dysmenorrhoea following the use of combined oral contraceptive pills.


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