Difference between revisions of "Products of conception"

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==Gross processing==
 
==Gross processing==
 
[[File:Gross pathology of fetal membranes versus decidua.jpg|thumb|Fetal membranes versus decidua.]]
 
[[File:Gross pathology of fetal membranes versus decidua.jpg|thumb|Fetal membranes versus decidua.]]
*Look for '''fetal tissue''' (fetus, fetal membranes or chorionic villi). If fetal parts are found, inspect them for gross anomalies. If found, submit one piece of the fetus and one piece of the placenta.<ref name=Chicago>{{cite web|url=https://voices.uchicago.edu/grosspathology/peds-perinatal/products-of-conception/|title=Gross Pathology Manual, By The University of Chicago Department of Pathology - Products of Conception|accessdate=2020-08-13}}</ref>
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*Look for '''fetal tissue''' (fetus, fetal membranes or chorionic villi). If any fetal tissue is found, no lengthy search is needed for other kinds of fetal tissue. Inspect them for gross anomalies. If found, submit one piece of the fetus and one piece of the placenta.<ref name=Chicago>{{cite web|url=https://voices.uchicago.edu/grosspathology/peds-perinatal/products-of-conception/|title=Gross Pathology Manual, By The University of Chicago Department of Pathology - Products of Conception|accessdate=2020-08-13}}</ref>
 
*If fetal parts are not visually found, search for diagnostic '''placental tissue''', which is soft and shaggy or spongy (as opposed to membranous, which is likely to be decidua or blood clots).<ref name=Chicago/>
 
*If fetal parts are not visually found, search for diagnostic '''placental tissue''', which is soft and shaggy or spongy (as opposed to membranous, which is likely to be decidua or blood clots).<ref name=Chicago/>
 
*If '''no fetal or placental tissue''' is found, all presented tissue needs to be submitted.
 
*If '''no fetal or placental tissue''' is found, all presented tissue needs to be submitted.

Revision as of 14:14, 31 August 2020

Author: Mikael Häggström [note 1]

Comprehensiveness

Comprehensiveness

On this resource, the following formatting is used for comprehensiveness:

  • Minimal depth
  • (Moderate depth)
  • ((Comprehensive))

Gross processing

Fetal membranes versus decidua.
  • Look for fetal tissue (fetus, fetal membranes or chorionic villi). If any fetal tissue is found, no lengthy search is needed for other kinds of fetal tissue. Inspect them for gross anomalies. If found, submit one piece of the fetus and one piece of the placenta.[1]
  • If fetal parts are not visually found, search for diagnostic placental tissue, which is soft and shaggy or spongy (as opposed to membranous, which is likely to be decidua or blood clots).[1]
  • If no fetal or placental tissue is found, all presented tissue needs to be submitted.

Gross report

(Labeled - products of conception.) The specimen (is received <<fresh / in formalin>>) and consists of multiple fragments of soft tan-pink decidua, blood clots and amniotic sac measuring about 5 cc in aggregate. The intact amniotic sac measures 2.3 cm in greatest dimension. Fetal tissue is identified within the amniotic sac, measuring 1.0 cm in crown-rump length. Representative sections are submitted for microscopic examination (in 1 cassette).

Microscopy

Most important is to detect the presence of chorionic villi.

Microscopy report

Immature chorionic villi, having loose stroma and few capillaries.

Example:

((Products of conception/fetal tissue:)) Products of conception, including immature chorionic villi, and fetal tissue corresponding to first trimester pregnancy. ((Spontaneous abortion, clinically.))

Notes

  1. For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Patholines:Authorship for details.

Main page

References

Image sources