Chorionic bump
| Chorionic bump | |
|---|---|
| Other names | chorionic bulge |
 | |
| Specialty | Obstetrics |
| Usual onset | During pregnancy |
| Risk factors | Use of assisted reproductive technology |
| Prognosis | Higher rate of miscarriage |
| Frequency | 1.5-7 per 1,000 pregnancies |
Chorionic bump is a rare medical condition defined as an irregular, convex bulge or protrusion from the choriodecidual surface into the gestational sac.[1][2] It is medically defined as a separate entity from a chorionic hematoma.[3]
Identification of a chorionic bump in early first trimester pregnancy represents a significant risk factor for pregnancy loss, given a live birth rate of less than 50%.[4] The incidence rate for chorionic bump is estimated to be between 1.5 and 7 per 1000 pregnancies.[3]
Cause and diagnosis
[edit | edit source]It is believed that chorionic bump can start as a hematoma in the intervillous space.[5] Additionally, Infertility treatments may be associated with increased likelihood of chorionic bump.[4]
Prognosis and treatment
[edit | edit source]Existing literature suggests that chorionic bump causes first trimester pregnancy loss and doubles the miscarriage rate as compared to having no risk factors.[4]
References
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