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Placental gross/microscopic abnormalities, non-neoplastic

Breus mole

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


● Massive subchorionic hematoma that can lead to diminished placental function and intrauterine death
● Sometimes identified on ultrasound (Arch Pathol Lab Med 1983;107:438)


● Chronic hemorrhage into the subchorionic space that is seen in both livebirths and missed abortions

Gross description

● Nodular hematoma on fetal surface that bulges into the amnionic cavity and distorts the underlying parenchyma
● Overlying membranes may be discolored due to hemosiderin

End of Placenta > Placental gross/microscopic abnormalities, non-neoplastic > Breus mole

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