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Placenta

Placental gross/microscopic abnormalities, non-neoplastic

Tenney-Parker changes


Reviewers: Mandolin Ziadie, M.D. (see Reviewers page)
Revised: 12 November 2011, last major update October 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

Definition
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● Increased numbers of trophoblastic syncytial knots, often due to maternal hypertension or uteroplacental insufficiency
● Often seen in association with terminal villous hypoplasia

Etiology
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● Inadequate maternal perfusion (diabetes, hypertension)

Micro description
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● Increased syncytial knotting
● Changes of hypertension / pre-eclampsia / decidual vasculopathy may be present in the decidua

End of Placenta > Placental gross/microscopic abnormalities, non-neoplastic > Tenney-Parker changes


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