Definition - What does Subchorionic Hematoma mean?
A subchorionic hematoma is a collection of blood or blood clot in between the space of placenta and uterus that may cause light to heavy vaginal bleeding during early pregnancy. It is one of the most common abnormalities observed in first trimester of pregnancy through ultrasound. The majority of these types of threatened miscarriages are carried forward as viable pregnancies without complications.
FertilitySmarts explains Subchorionic Hematoma
Bleeding usually occurs when small parts of the pregnancy membrane or chorion get detached from the uterine lining. The cause of the bleeding is not known, but nearly 1% of pregnancies come across the problem of subchorionic hematomas, and 20% of pregnant women who experience early bleeding are diagnosed similarly.
Some subchorionic hematomas have no symptoms and are detected only during a routine ultrasound. Small hematomas often subside on their own. In exceptional cases, when hematomas are large in size, they can detach the placenta from the uterine wall, resulting in premature rupturing of the membranes. This increases the chances of pregnancy complications, particularly miscarriage and preterm delivery.