Twin placentas: Difference between revisions

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*Split at approximately 7th day.
*Split at approximately 7th day.
*Always monozygotic twins.
*Always monozygotic twins.
*Very rare.
*High rate of complications - cords get into knots.


===Gross===
===Gross===
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===Microscopic===
===Microscopic===
Features:<ref name=Ref_H4P2_979>{{Ref H4P2|979}}</ref>
Features:<ref>URL: [http://library.med.utah.edu/WebPath/PLACHTML/PLAC006.html http://library.med.utah.edu/WebPath/PLACHTML/PLAC006.html]. Accessed on: 30 October 2013.</ref>
*No chorion in the T-zone - '''key feature'''.
*No chorion in the T-zone - '''key feature'''.


====Images====
====Images====
<gallery>
Image:Monochorionic Diamniotic Twins, Intervening Membrane.jpg | Di-Mo placenta. (WC/euthman)
</gallery>
*[http://www.pathologypics.com/PictView.aspx?ID=1304 Diamniotic-monochorionic gestation (pathologypics.com)].
*[http://www.pathologypics.com/PictView.aspx?ID=1304 Diamniotic-monochorionic gestation (pathologypics.com)].
*[http://library.med.utah.edu/WebPath/PLACHTML/PLAC006.html Di-Mo placenta (utah.edu)].
*[http://library.med.utah.edu/WebPath/PLACHTML/PLAC006.html Di-Mo placenta (utah.edu)].
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===Gross===
===Gross===
*Thick membrane at T-zone.
Features - T-zone:<ref name=Ref_Placenta129>{{Ref Placenta|129}}</ref>
*Thick.
*Less translucent.
*Blood vessels - fine branching.


===Microscopic===
===Microscopic===
Features:
Features:
*Decidua interposed between two chorions.
*Chorion present in the T-zone.


====Images====
====Images====
*[http://library.med.utah.edu/WebPath/PLACHTML/PLAC005.html Di-Di placenta (utah.edu)].
<gallery>
Image:Diamniotic-dichorionic_twin_placenta_-_low_mag.jpg | DiDi placenta. (WC)
Image:Diamniotic dichorionic placenta, HE 1.jpg | DiDi placenta. (WC/euthman)
Image:Diamniotic dichorionic placenta, HE 2.jpg | DiDi placenta. (WC/euthman)
</gallery>
*[http://library.med.utah.edu/WebPath/PLACHTML/PLAC005.html DiDi placenta (utah.edu)].


===Sign out===
===Sign out===
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**Placental disc: large, pale.
**Placental disc: large, pale.
*Recipient:
*Recipient:
**Twin: hypervolemia, polyuria, polyhydramnios, +/- [[hydrops fetalis]], +/- CHF, hemolytic janundice, +/- large congested organs.
**Twin: hypervolemia, polyuria, [[polyhydramnios]], +/- [[hydrops fetalis]], +/- CHF, hemolytic janundice, +/- large congested organs.
**Placental disc: small, firm, congested.
**Placental disc: small, firm, congested.


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