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Summary

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

Choriocarcinomas consist of two cell populations:

  1. Cytotrophoblasts.
    • Pale/clear cytoplasm.
  2. Syncytiotrophoblasts.
    • Hyperchromatic cytoplasm.
    • Typically multinucleated.

Traditionally, the syncytiotrophoblasts are said to produce the beta-hCG;[1]however, it has been determined that cytotrophoblast also produce some.[2]

The syncytiotrophoblasts are often arranged around the outside of cytotrophoblast cell clusters, reminicent of the arrangement in the placenta. On placental villi, the syncytiotrophoblasts are superficial to and, early in pregnancy, cover the cytotrophoblast.

Choriocarcinoma is classified as a germ cell tumour. It can arise in the testis or ovary and from a hydatidiform mole. It may be part of a mixed germ cell tumour.

  • Intermed. mag.
    Intermed. mag.
  • High mag.
    High mag.
  • Very high mag.
    Very high mag.
  • High mag.
    High mag.
  • Very high mag.
    Very high mag.

References

  1. ↑ (2010). "Biological functions of hCG and hCG-related molecules.". Reprod Biol Endocrinol 8: 102. DOI:10.1186/1477-7827-8-102.
  2. ↑ (Aug 2002). "Trophoblast origin of hCG isoforms: cytotrophoblasts are the primary source of choriocarcinoma-like hCG.". Mol Cell Endocrinol 194 (1-2): 147-55.
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current04:16, 15 December 2011Thumbnail for version as of 04:16, 15 December 20114,272 × 2,848 (3.79 MB)Nephron{{Information |Description ={{en|1=Very high magnification micrograph of '''choriocarcinoma'''. H&E stain. Choriocarcinomas consist of two cell populations: #Cytotrophoblasts

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