Intermediate trophoblast

Micrograph showing intermediate trophoblasts. H&E stain.
Implantation site intermediate trophoblast. Low molecular weight cytokeratin stain.

Intermediate trophoblast is a distinct subtype of trophoblastic tissue that arises from the cytotrophoblast.[1]

It is sub-categorized by location:[1]

  • Villous intermediate trophoblast:
    • at anchoring villi of trophoblastic column
  • Implantation site intermediate trophoblast:
    • at implantation site (or basal plate), differentiated from villous intermediate trophoblast
  • Chorionic-type intermediate trophoblast
    • at chorionic laeve of fetal membrane, differentiated from villous intermediate trophoblast
  1. ^ a b Shih IM, Kurman RJ (January 2001). "The pathology of intermediate trophoblastic tumors and tumor-like lesions". Int. J. Gynecol. Pathol. 20 (1): 31–47. doi:10.1097/00004347-200101000-00004. PMID 11192071.