Placenta

Nonneoplastic placental conditions and abnormalities

Noninfectious

Chronic deciduitis



Topic Completed: 1 September 2011

Minor changes: 29 October 2020

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PubMed Search: Chronic deciduitis

Mandolin S. Ziadie, M.D.
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Cite this page: Ziadie MS. Chronic deciduitis. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/placentachronicdecid.html. Accessed November 29th, 2021.
Definition / general
  • Abnormal infiltration of small lymphocytes and plasma cells in the decidualized endometrium
  • May be associated with preterm labor
Etiology
  • Presence of plasma cells is a sign of stimulation, possibly by microorganisms, autoantigens or fetal alloantigens
Microscopic (histologic) description
  • Infiltrate of small lymphocytes and plasma cells in the decidua
  • Diffuse lymphocytic infiltrate without plasma cells is also acceptable (Hum Pathol 2000;31:292)
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