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Deformational Plagiocephaly vs. Lambdoid Craniosynostosis

Webmaster's Note: Positional Plagiocephaly is most easily visually confused with lambdoid craniosynostosis (premature fusion of the lambdoid suture of the cranium).  Craniosynostosis is often ruled out using lateral head x-rays and/or CAT scans.  However, in the absence of radiographic images, certain external visual cues generally distinguish positional plagiocephaly from lambdoid synostosis.  This information will guide you.  However, we urge you to consult your physician. You can find a list of recommended physicians in the Plagiocephaly database.

Kevin M. Kelly, PhD  

 Positional Plagiocephaly Lambdoid Craniosynostosis
In positional plagiocephaly, the ear on the affected side is pushed forward toward the face. In lambdoid craniosynostosis, the ear on the side of a prematurely fused lambdoid suture is pulled back toward the back of the head.
In positional plagiocephaly, there is often compensatory bossing, or bulging of the forehead on the side of the "flat spot". In lambdoid craniosynostosis, that usually isn't the case (if no other suture is involved).
In positional plagiocephaly, it is more in the shape of a parallelogram (like a crooked rectangle).  As a matter of fact, sometimes positional plagiocephaly is called "parallelism". In lambdoid craniosynostosis, the skull takes on a trapezoid shape (wider in front, narrower in back).
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Last updated: 01-Mar-2008
 
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The information provided on this web site, although based on a thorough and careful review of the medical literature, is for educational purposes only and is not intended as a substitute for the medical advice of physicians. The reader should consult a physician in matters relating to health and particularly in regards to any symptoms which may require diagnosis or medical attention. Neither the author nor the publisher shall be responsible for any harm or injury resulting from interpretations of the materials in this site.
Plagiocephaly.Info, formerly Plagiocephaly.org.
Another Internet presence provided by Kelly Webworks.

For questions and/or comments about the this page, contact Kevin M. Kelly.

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