When Do Subchorionic Hematomas Form?

Subchorionic hemorrhage and subchorionic hematoma are the most common cause of vaginal bleeding in patients who are 10 to 20 weeks gestational age and make up about 11% of cases.

How early can a subchorionic hematoma be diagnosed?

How does a subchorionic hematoma look on ultrasound? We see subchorionic hematomas or suspect subchorionic clots in perhaps 1% of pregnancies in the between 13 and 22 weeks. Most of these occur in women who have had vaginal bleeding.

What causes a subchorionic hemorrhage in early pregnancy?

It occurs when the placenta partially detaches from where it was implanted in the wall of your uterus. Subchorionic hematomas can be small or large. Small ones are more common. Larger ones tend to cause more bleeding and problems.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.