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Difference between revisions of "Placenta"
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→Chorangiosis
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Features: | Features: | ||
*Increased blood vessels in the terminal villi. | *Increased blood vessels in the terminal villi. | ||
**Altshuler criteria: "a minimum of 10 villi, each with 10 or more vascular channels, in 10 or more areas of 3 or more random, non-infarcted placental areas when using a ×10 ocular."<ref name=pmid6546343>{{Cite journal | last1 = Altshuler | first1 = G. | title = Chorangiosis. An important placental sign of neonatal morbidity and mortality. | journal = Arch Pathol Lab Med | volume = 108 | issue = 1 | pages = 71-4 | month = Jan | year = 1984 | doi = | PMID = 6546343 }}</ref>ref name=pmid11520290/> | |||
***The definition suffers from [[HPFitis]]. | |||
*Not well circumscribed. | *Not well circumscribed. | ||
Notes: | Notes: | ||
*Usually not seen on gross pathology. | *Usually not seen on gross pathology. | ||
*Normal villi have up to five vascular channels.<ref name=pmid11520290>{{Cite journal | last1 = De La Ossa | first1 = MM. | last2 = Cabello-Inchausti | first2 = B. | last3 = Robinson | first3 = MJ. | title = Placental chorangiosis. | journal = Arch Pathol Lab Med | volume = 125 | issue = 9 | pages = 1258 | month = Sep | year = 2001 | doi = 10.1043/0003-9985(2001)1251258:PC2.0.CO;2 | PMID = 11520290 | url=http://www.archivesofpathology.org/doi/full/10.1043/0003-9985%282001%29125%3C1258:PC%3E2.0.CO;2}}</ref> | |||
=See also= | =See also= | ||