What is a chorionic decidual haemorrhage?

Subchorionic hemorrhage (subchorionic hematoma) is the most common sonographic abnormality in the presence of a live embryo. Vaginal bleeding affects 25% of all women during the first half of pregnancy and is a common reason for first-trimester ultrasonography. read more

The decidua parietalis and capsularis come in contact, fuse, and obliterate the uterine cavity; By week 22, reduced blood supply causes the decidua capsularis to degenerate and disappear; The amniotic sac enlarges faster than the chorionic sac, and their walls fuse to form the amniochorionic membrane. read more

Subchorionic haemorrhage (SCH) occurs when there is perigestational haemorrhage and blood collects between the uterine wall and the chorionic membrane in pregnancy. read more

The decidua is the uterine lining during a pregnancy, which forms the maternal part of the placenta. It is formed under the influence of progesterone and forms highly characteristic cells. read more