Difference between revisions of "Placenta creta"
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**Trophoblastic tissue deeper than it should be, so the placenta fails to separate at time of delivery | **Trophoblastic tissue deeper than it should be, so the placenta fails to separate at time of delivery | ||
*Clinical? | *Clinical? | ||
**Failure of placenta to deliver spontaneously | **Failure of placenta to deliver spontaneously. | ||
**Postpartum hemorrhage leading to a hysterectomy.<ref name=pmid18514815>{{Cite journal | last1 = Tantbirojn | first1 = P. | last2 = Crum | first2 = CP. | last3 = Parast | first3 = MM. | title = Pathophysiology of placenta creta: the role of decidua and extravillous trophoblast. | journal = Placenta | volume = 29 | issue = 7 | pages = 639-45 | month = Jul | year = 2008 | doi = 10.1016/j.placenta.2008.04.008 | PMID = 18514815 }}</ref> | **Postpartum hemorrhage leading to a hysterectomy.<ref name=pmid18514815>{{Cite journal | last1 = Tantbirojn | first1 = P. | last2 = Crum | first2 = CP. | last3 = Parast | first3 = MM. | title = Pathophysiology of placenta creta: the role of decidua and extravillous trophoblast. | journal = Placenta | volume = 29 | issue = 7 | pages = 639-45 | month = Jul | year = 2008 | doi = 10.1016/j.placenta.2008.04.008 | PMID = 18514815 }}</ref> | ||
**May be associated with antepartum hemorrhage | **May be associated with antepartum hemorrhage. | ||
**Discovered on ultrasound during pregnancy, especially when associated with placenta previa | **Discovered on ultrasound during pregnancy, especially when associated with placenta previa | ||
*Pathogenesis? | *Pathogenesis? | ||
Revision as of 15:21, 11 May 2015
Placenta creta is an uncommon pathology of placental attachment.
General
- What?
- Trophoblastic tissue deeper than it should be, so the placenta fails to separate at time of delivery
- Clinical?
- Failure of placenta to deliver spontaneously.
- Postpartum hemorrhage leading to a hysterectomy.[1]
- May be associated with antepartum hemorrhage.
- Discovered on ultrasound during pregnancy, especially when associated with placenta previa
- Pathogenesis?
Note:
- Normal: trophoblastic tissue attaches to the decidua.[3]
- Retained placentas have less multinucleated trophoblastic giant cells.[4]
Placenta accreta
- Trophoblastic tissue (directly) adherent to the myometrium.[3]
Image:
Placenta increta
- Trophoblastic tissue extends into the myometrium.
Placenta percreta
- Trophoblastic tissue penetrates through the myometrium.
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PLACENTA, UMBILICAL CORD AND FETAL MEMBRANES, BIRTH: - PLACENTAL DISC WITH THIRD TRIMESTER VILLI WITHIN NORMAL LIMITS, AND A DISRUPTED MATERNAL SURFACE COMPATIBLE WITH A HISTORY OF PLACENTA ACCRETA. - THREE VESSEL UMBILICAL CORD WITHIN NORMAL LIMITS. - FETAL MEMBRANES WITHIN NORMAL LIMITS.
See also
References
- ↑ 1.0 1.1 Tantbirojn, P.; Crum, CP.; Parast, MM. (Jul 2008). "Pathophysiology of placenta creta: the role of decidua and extravillous trophoblast.". Placenta 29 (7): 639-45. doi:10.1016/j.placenta.2008.04.008. PMID 18514815.
- ↑ Wortman, AC.; Alexander, JM. (Mar 2013). "Placenta accreta, increta, and percreta.". Obstet Gynecol Clin North Am 40 (1): 137-54. doi:10.1016/j.ogc.2012.12.002. PMID 23466142.
- ↑ 3.0 3.1 Böcker, Werner; Denk, Helmut; Heitz, Philipp U.; Moch, Holger (2008). [Pathologie] (4th ed.). Urban & Fischer Verlag/Elsevier GmbH. pp. 974. ISBN 978-3437423826.
- ↑ van Beekhuizen, HJ.; Joosten, I.; de Groot, AN.; Lotgering, FK.; van der Laak, J.; Bulten, J. (Sep 2009). "The number of multinucleated trophoblastic giant cells in the basal decidua is decreased in retained placenta.". J Clin Pathol 62 (9): 794-7. doi:10.1136/jcp.2009.065953. PMID 19734475.
- ↑ URL: http://library.med.utah.edu/WebPath/EXAM/IMGQUIZ/plfrm.html. Accessed on: 3 December 2011.