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| Normal Chorionic Plate |
| Etiology • Not applicable |
| Pathogenesis • Not applicable, |
| Epidemiology • Not applicable |
| General Gross Description • Fetal surface of the placenta with a glistening gray surface • Umbilical cord inserts into the chorionic plate • Contains fetal arteries and veins with arteries coursing over veins • Stem villi originate from the underside of the chorionic plate. |
| General Microscopic Description • Surface covered by amniotic epithelium lying on a compact connective tissue layer on top of the amniotic mesoderm • Spongy layer separating amniotic from chorionic mesoderm • Bottom of the chorionic mesoderm contains trophoblasts lying over subchorionic (Langhans) fibrin or fibrinoid • Fetal vessels are located in the chorionic plate; differentiating between fetal arteries and veins histologically is not easily accomplished • Stem villi depend from chorionic plate |
| Clinical Correlation • Not applicable |
| References • Benirschke K, Kaufmann P. Pathology of the human placenta, 3rd ed. New York: Springer-Verlag, 1995, pp. 214-218. |
| Normal Chorionic Plate |
| Synopsis by: Melinda Sanders M.D. (T88210M00100)[431] |
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