Revision 23 for 'Placentomegaly'

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Placentomegaly

Placentomegaly is a term applied to an abnormally enlarged placenta. 

Pathology

Associations

It can be associated with number of maternal and fetal disorders which include:

Radiographic features

Antenatal ultrasound

May show an increase in placental thickness and/or placental extent. The increase in size may be homo or heterogeneous dependent on the cause. The maximum thickness considered normal at any stage in pregnancy is often taken at 4 cm.

Differential diagnosis

The differential for an apparent increased in placental size on ultrasound includes:

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