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Placenta

Placental gross/microscopic abnormalities, non-neoplastic

Chronic deciduitis

Reviewers: Mandolin Ziadie, M.D. (see Reviewers page)
Revised: 10 October 2011, last major update September 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

Definition
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● Abnormal infiltration of small lymphocytes and plasma cells in the decidualized endometrium
● May be associated with preterm labor

Etiology
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● Presence of plasma cells is a sign of stimulation, possibly by microorganisms, autoantigens or fetal alloantigens

Micro description
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● Infiltrate of small lymphocytes and plasma cells in the decidua
● Diffuse lymphocytic infiltrate without plasma cells is also acceptable (Hum Pathol 2000;31:292)

End of Placenta > Placental gross/microscopic abnormalities, non-neoplastic > Chronic deciduitis

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