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sonography report indicated focal retrochorionic collection

i had sonography test of 12 weeks.
report indicated focal retrochorionic collection noted. what does this mean .
do tell me .
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replied April 16th, 2014
Thank you for asking!
Chorion is a membrane in uterus protecting baby in water this way unless it breaks. Now focal retrochorionic collection indicates a hematoma subchorionic that chorion and uterius wall has a collection of fluids most likely of hematoma / blood.
I want you to know that In women whose sonogram shows a subchorionic hematoma, the outcome of the fetus depends on the size of the hematoma, the mother's age, and the fetus's gestational age. Rates of miscarriage increase with advancing maternal age and increasing size of hematoma. Late first- or second-trimester bleeding also worsens the prognosis. The presence of sonographically detected subchorionic hemorrhage (subchorionic hematoma) increases the risk of miscarriage, stillbirth, abruptio placentae, and preterm labor.

The subchorionic hemorrhage (subchorionic hematoma) collects between the uterine wall and the chorionic membrane and may leak through the cervical canal. Later in the first trimester and early second trimester, the subchorionic hematoma may partially strip the developing placenta away from its attachment site. Therefore, the prognosis of patients with this type of hematoma is worse than the prognosis of patients with hematoma early in first trimester.

The subchorionic hematoma often regresses, especially if it is small or moderate in size. Large hematomas, which strip at least 30-40% of placenta away from endometrium, may enlarge further, compressing the gestational sac and leading to premature rupture of membranes with consequent spontaneous abortion.
I hope it helps. Get to your obstetrician and let them sort it out for you as it needs a complete clinical correlation for that.
Take care
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