Difference between revisions of "Placenta"

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#*Villi appear to be crowded.<ref>{{Ref PBoD|1109}}</ref>

#**Normal spacing is ~1x smallest villus or larger.

#***In perivillous fibrin deposition - spacing usu. larger than normal.

#Prominent syncytial knots.

#Thickened trophoblastic basement membrance (below [[cytotrophoblast]]s).

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Line 559:

===Microscopy===

Features:

*Acellular eosinophilic material around formed villi.

**Obliteration of intervillous space.

*Obliteration of intervillous space.

**Intervillous distance increased vis-a-vis normal - '''key feature'''.

Notes:

*Nuclei of villi are usu. preserved.

*Villi may have secondary infarction, i.e. there may be [[Basics#Nuclear destruction words|nuclear destruction]] (karyolysis, karyorrhexis, pyknosis).

=Fetal disease=

Difference between revisions of "Placenta"

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@@ Line 531: / Line 531: @@
 #*Villi appear to be crowded.<ref>{{Ref PBoD|1109}}</ref>
 #**Normal spacing is ~1x smallest villus or larger.
+#***In perivillous fibrin deposition - spacing usu. larger than normal.
 #Prominent syncytial knots.
 #Thickened trophoblastic basement membrance (below [[cytotrophoblast]]s).
@@ Line 558: / Line 559: @@
 ===Microscopy===
+Features:
 *Acellular eosinophilic material around formed villi.
-**Obliteration of intervillous space.
+*Obliteration of intervillous space.
+**Intervillous distance increased vis-a-vis normal - '''key feature'''.
+Notes:
+*Nuclei of villi are usu. preserved.
+*Villi may have secondary infarction, i.e. there may be [[Basics#Nuclear destruction words|nuclear destruction]] (karyolysis, karyorrhexis, pyknosis).
 =Fetal disease=