File:Chorangiosis - very high mag.jpg

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English: Very high magnification micrograph of chorangiosis. H&E stain.


  • 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."[1][2]


  • Normal villi have up to five vascular channels.[2]
  • The Altshuler criteria are not theoretically rigorous, as they do not define the area.

Related images


  1. (Jan 1984). "Chorangiosis. An important placental sign of neonatal morbidity and mortality.". Arch Pathol Lab Med 108 (1): 71-4.
  2. a b (Sep 2001). "Placental chorangiosis.". Arch Pathol Lab Med 125 (9): 1258. DOI:10.1043/0003-9985(2001)1251258:PC2.0.CO;2.
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Author Nephron


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current02:13, 6 August 2011Thumbnail for version as of 02:13, 6 August 20114,272 × 2,848 (3.48 MB)Nephron (talk | contribs){{Information |Description ={{en|1=Very high magnification micrograph of '''chorangiosis'''. H&E stain. Features: *Increased blood vessels in the terminal villi. **Altshuler cr
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