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Difference between revisions of "Placenta creta"
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==General== | ==General== | ||
*What? | *What? | ||
**Trophoblastic tissue deeper than it should be | **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. | |||
**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. | |||
**Discovered on ultrasound during pregnancy, especially when associated with placenta previa | |||
*Pathogenesis? | *Pathogenesis? | ||
**It is suspected that it arises as there is defect in the endometrium/myometrium -- ''not'' deep trophoblastic invasion.<ref name=pmid18514815/> | **It is suspected that it arises as there is defect in the endometrium/myometrium -- ''not'' deep trophoblastic invasion.<ref name=pmid18514815/> | ||
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===Placenta increta=== | ===Placenta increta=== | ||
* | *Placenta (i.e. trophoblastic tissue) extends into the myometrium but not through.<ref name=pmid26002174>{{Cite journal | last1 = Silver | first1 = RM. | last2 = Barbour | first2 = KD. | title = Placenta Accreta Spectrum: Accreta, Increta, and Percreta. | journal = Obstet Gynecol Clin North Am | volume = 42 | issue = 2 | pages = 381-402 | month = Jun | year = 2015 | doi = 10.1016/j.ogc.2015.01.014 | PMID = 26002174 }}</ref> | ||
===Placenta percreta=== | ===Placenta percreta=== | ||
*Trophoblastic tissue penetrates through the myometrium. | *Trophoblastic tissue penetrates through the myometrium. | ||
==Sign out== | |||
<pre> | |||
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. | |||
</pre> | |||
==See also== | ==See also== | ||