Placentomegaly

Changed by Karwan T. Khoshnaw, 3 Oct 2018

Updates to Article Attributes

Body was changed:

Placentomegaly is a term applied to an abnormally enlarged placenta. 

Pathology

Associations

It can be associated with a 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:

  • +<li><a title="Placental mesenchymal dysplasia" href="/articles/placental-mesenchymal-dysplasia">placental mesenchymal dysplasia</a></li>

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