Succenturiate lobe
Updates to Article Attributes
A succenturiate lobe (SL) is a variation in placental morphology and refers to a smaller accessory placental lobe that is separate to the main disc of the placenta. There can be more than one succenturiate lobe.
Epidemiology
The estimated incidence is ~2 per 1000 pregnancies.
Radiographic features
Antenatal ultrasound
Seen as a smaller separate lobe of similar echotexture to the main placental disc. It is important to establish the location of any connecting vessels, and in particular to look for any vascular connection crossing the internal os (i.e. vasa previa).
Complications
- increased incidence of type II vasa previa
- increased incidence of postpartum haemorrhage due to retained placental tissue 5
History and etymology
The term succenturiate
Differential diagnosis
If more than one lobe of placenta is confidently seen in an antenatal scan consider
- bilobed placenta: two lobes are usually of similar size
- twin pregnancy with two placentas
For a focal area of increased thickening on ultrasound also consider
- focal myometrial contraction
- iso-echoic haematoma from a placental abruption
See also
-<p>A <strong>succenturiate lobe (SL)</strong> is a <a href="/articles/variation-in-placental-morphology">variation in placental morphology</a> and refers to a smaller accessory placental lobe that is separate to the main disc of the placenta. There can be more than one succenturiate lobe.</p><h4>Epidemiology</h4><p>The estimated incidence is ~2 per 1000 pregnancies.</p><h4>Radiographic features</h4><h5>Antenatal ultrasound</h5><p>Seen as a <strong>smaller</strong> separate lobe of similar echotexture to the main placental disc. It is important to establish the location of any connecting vessels, and in particular to look for any vascular connection crossing the internal os (i.e. vasa previa).</p><h4>Complications</h4><ul>- +<p>A <strong>succenturiate lobe (SL)</strong> is a <a href="/articles/variation-in-placental-morphology">variation in placental morphology</a> and refers to a smaller accessory placental lobe that is separate to the main disc of the placenta. There can be more than one succenturiate lobe.</p><h4>Epidemiology</h4><p>The estimated incidence is ~2 per 1000 pregnancies.</p><h4>Radiographic features</h4><h5>Antenatal ultrasound</h5><p>Seen as a smaller separate lobe of similar echotexture to the main placental disc. It is important to establish the location of any connecting vessels, and in particular to look for any vascular connection crossing the internal os (i.e. vasa previa).</p><h4>Complications</h4><ul>
-</ul><h4>History and etymology</h4><p>The term <strong>succenturiate</strong> derives from the latin word "succenturio" meaning "to substitute".</p><h4>Differential diagnosis</h4><p>If <strong>more than one lobe of placenta is confidently seen</strong> in an antenatal scan consider</p><ul>- +</ul><h4>History and etymology</h4><p>The term "succenturiate" derives from the latin word "succenturio" meaning "to substitute".</p><h4>Differential diagnosis</h4><p>If more than one lobe of placenta is confidently seen in an antenatal scan consider</p><ul>
-</ul><p>For a <strong>focal area of increased thickening </strong>on ultrasound also consider</p><ul>- +</ul><p>For a focal area of increased thickening on ultrasound also consider</p><ul>
Unable to process the form. Check for errors and try again.