Placenta
Placental gross / microscopic abnormalities, nonneoplastic
Polyps

Author: Mandolin Ziadie, M.D. (see Authors page)

Revised: 13 October 2017, last major update October 2011

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PubMed Search: "Placental polyp"

Cite this page: Ziadie, M. Polyps. PathologyOutlines.com website. http://pathologyoutlines.com/topic/placentapolyp.html. Accessed November 23rd, 2017.
Definition / general
Microscopic (histologic) description
  • Uterine placental polyps are composed of necrotic and hyalinized chorionic villi without identifiable lining trophoblast; intermediate trophoblast is usually viable; base of polyp is composed of decidua with dilated blood vessels
  • Amniotic polyps are composed of thin connective tissue stalks lined by amniotic degenerating epithelium