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Difference between revisions of "Placenta"
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→Cord pathology: +coiling
(→Cord pathology: more) |
(→Cord pathology: +coiling) |
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| Line 200: | Line 200: | ||
*Hypercoiling. | *Hypercoiling. | ||
*Abnormal insertion. | *Abnormal insertion. | ||
*Cord knots. | *Cord knots (true vs. false). | ||
*Strictures. | *Strictures. | ||
*Hematoma. | *Hematoma. | ||
| Line 247: | Line 247: | ||
*Knot should be untied to assess for deformation of Wharton's jelly. | *Knot should be untied to assess for deformation of Wharton's jelly. | ||
*Sections from both sides of the knot - to look for thrombi. | *Sections from both sides of the knot - to look for thrombi. | ||
Note: | |||
*False knots (large diameter - focally) are common - they cannot be untied. | |||
===Microscopic=== | ===Microscopic=== | ||
| Line 257: | Line 260: | ||
*[http://library.med.utah.edu/WebPath/ATHHTML/ATH031.html Lines of Zahn (utah.edu)]. | *[http://library.med.utah.edu/WebPath/ATHHTML/ATH031.html Lines of Zahn (utah.edu)]. | ||
*[http://pathhsw5m54.ucsf.edu/case9/image94.html Lines of Zahn (ucsf.edu)]. | *[http://pathhsw5m54.ucsf.edu/case9/image94.html Lines of Zahn (ucsf.edu)]. | ||
==Coiling== | |||
===General=== | |||
*There no little uniformity in how coiling is assessed.<ref name=pmid21080869>{{cite journal |author=Khong TY |title=Evidence-based pathology: umbilical cord coiling |journal=Pathology |volume=42 |issue=7 |pages=618–22 |year=2010 |month=December |pmid=21080869 |doi=10.3109/00313025.2010.520309 |url=}}</ref> | |||
*Hypo- and hypercoiling are both considered problematic.<ref name=Ref_WMSP464>{{Ref WMSP|464}}</ref> | |||
=Twin placentas= | =Twin placentas= | ||