Placentomegaly

Changed by Karwan T. Khoshnaw, 14 Sep 2018

Updates to Article Attributes

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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:

  • -<p><strong>Placentomegaly</strong> is a term applied to an abnormally enlarged placenta. </p><h4>Pathology</h4><h5>Associations</h5><p>It can be associated with number of maternal and fetal disorders which include:</p><ul>
  • +<p><strong>Placentomegaly</strong> is a term applied to an abnormally enlarged placenta. </p><h4>Pathology</h4><h5>Associations</h5><p>It can be associated with a number of maternal and fetal disorders which include:</p><ul>
  • -<li><a title="alpha-thalassemia" href="/articles/alpha-thalassemia">alpha-thalassemia</a></li>
  • +<li><a href="/articles/alpha-thalassemia">alpha-thalassemia</a></li>
  • -<a href="/articles/triploidy">triploid</a>: with extra set from paternal origin</li></ul>
  • +<a href="/articles/triploidy">triploid</a>: with an extra set from paternal origin</li></ul>
  • -<a href="/articles/finnish-type-congenital-nephrotic-syndrome">Finnish type congenital nephrotic syndrome</a> <sup>6<sup>​</sup></sup>
  • +<a href="/articles/finnish-type-congenital-nephrotic-syndrome">Finnish type congenital nephrotic syndrome</a> <sup>6<sup> </sup></sup>
  • -<li><a title="fetomaternal haemorrhage" href="/articles/fetomaternal-haemorrhage">fetomaternal haemorrhage</a></li>
  • +<li><a href="/articles/fetomaternal-haemorrhage">fetomaternal haemorrhage</a></li>
  • -<li><a title="intraplacetnal haemorrhage " href="/articles/intraplacetnal-haemorrhage">intraplacetnal haemorrhage </a></li>
  • +<li><a href="/articles/intraplacetnal-haemorrhage">intraplacental haemorrhage </a></li>

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