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Chorionic bump

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Medical condition
Chorionic bump
Other nameschorionic bulge

Chorionic bump is a rare medical condition defined as an irregular, convex bulge or protrusion from the choriodecidual surface into the gestational sac. It is medically defined as a separate entity from a chorionic hematoma.

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%. The incidence rate for chorionic bump is estimated to be between 1.5 to 7 per 1000 pregnancies.

Cause and diagnosis

It is believed that chorionic bump can start as a hematoma in the intervillous space. Additionally, Infertility treatments may be associated with increased likelihood of chorionic bump.

Prognosis and treatment

Existing literature suggests that chorionic bump causes first trimester pregnancy loss and doubles the miscarriage rate as compared to having no risk factors.

References

  1. Yousaf, Amman; Tayyab, Ahmad; Anil, Muhammad Sana Ullah; Ahmed, Mohamed Mohamed Helmi; et al. (2020-11-14). "Chorionic Bump: Radiologic Features and Pregnancy Outcomes". Cureus. 12 (11): e11480. doi:10.7759/cureus.11480. ISSN 2168-8184. PMC 7735167. PMID 33329976.
  2. Liu, Emily; Noor, Abdul; Pereira, Nigel (2024-07-01). "Chorionic Bump: An Early Marker for Miscarriage and Embryonic Aneuploidy?". Journal of Obstetrics and Gynaecology Canada. 46 (7). doi:10.1016/j.jogc.2024.102576. ISSN 1701-2163. PMID 38852808.
  3. ^ Sana, Y.; Appiah, A.; Davison, A.; Nicolaides, K. H.; et al. (2013). "Clinical significance of first-trimester chorionic bumps: a matched case–control study". Ultrasound in Obstetrics & Gynecology. 42 (5): 585–589. doi:10.1002/uog.12528. ISSN 1469-0705. PMID 23733598.
  4. ^ Harris, Robert D.; Couto, Corey; Karpovsky, Clara; Porter, Misty M. Blanchette; et al. (2006). "The Chorionic Bump". Journal of Ultrasound in Medicine. 25 (6): 757–763. doi:10.7863/jum.2006.25.6.757. ISSN 1550-9613. PMID 16731892.
  5. Younesi, Ladan; Shahnazari, Razieh (2017-12-01). "Chorionic Bump in First-trimester Sonography". Journal of Medical Ultrasound. 25 (4): 221–226. doi:10.1016/j.jmu.2017.04.004. ISSN 0929-6441. PMC 6029338. PMID 30065496.


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