Twin placentas: Difference between revisions

Jump to navigation Jump to search
← Older edit
Michael (talk | contribs)
49,346 edits
Michael (talk | contribs)
49,346 edits
 
(9 intermediate revisions by the same user not shown)
Line 7: Line 7:
*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===
*No membrane between the fetuses - apparently clinically.
*No membrane between the fetuses - apparently clinically.
*Umbilical cord attachments usually very close to one another.<ref name=Ref_Placenta133>{{Ref Placenta|133}}</ref>


==Diamniotic-monochorionic gestation==
==Diamniotic-monochorionic gestation==
Line 19: Line 22:


===Gross===
===Gross===
*Thin membrane at T-zone.
Features - T-zone membrane is:<ref name=Ref_Placenta128>{{Ref Placenta|128}}</ref>
*Thin.
*Translucent.
*No blood vessel remnants.


===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>
*One chorion (no decidua) in the T-zone.
*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)].
Line 51: Line 60:


===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===
Line 110: Line 127:
**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.


Retrieved from "https://librepathology.org/wiki/Twin_placentas"