Placental gross / microscopic abnormalities, nonneoplastic
Chronic deciduitis

Topic Completed: 1 September 2011

Minor changes: 15 February 2019

Copyright: 2002-2019,, Inc.

PubMed Search: Chronic deciduitis

Mandolin S. Ziadie, M.D.
Page views in 2019: 1,901
Page views in 2020 to date: 852
Cite this page: Ziadie MS. Chronic deciduitis. website. Accessed May 31st, 2020.
Definition / general
  • Abnormal infiltration of small lymphocytes and plasma cells in the decidualized endometrium
  • May be associated with preterm labor
  • 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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