Learn About Hemimegalencephaly

What is the definition of Hemimegalencephaly?
Hemimegalencephaly is a rare malformation involving one side of the brain. It may occur alone or in association with other syndromes such as Proteus syndrome, tuberous sclerosis, linear sebaceous nevus syndrome, neurofibromatosis, Sturge-Weber syndrome, or Klippel-Trenaunay syndrome. Children with this disorder may have a large, asymmetrical head accompanied by seizures, partial paralysis, and impaired cognitive development. The cause of Hemimegalencephaly is not fully understood, but involves a disturbance of cells early in development and likely involves genes involved in patterning and symmetry.
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What are the alternative names for Hemimegalencephaly?
  • Hemimegalencephaly
  • Macrencephaly
  • Unilateral Megalencephaly
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Published Date: May 02, 2022
Published By: Genetic and Rare Diseases Informnation Center

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