Megalencephaly

A congenital abnormality in which the occipitofrontal circumference is greater than two standard deviations above the mean for a given age. It is associated with HYDROCEPHALUS; SUBDURAL EFFUSION; ARACHNOID CYSTS; or is part of a genetic condition (e.g., ALEXANDER DISEASE; SOTOS SYNDROME).

Year introduced: 2011

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Restrict to MeSH Major Topic.

Do not include MeSH terms found below this term in the MeSH hierarchy.

Tree Number(s): C05.660.207.536, C10.500.507.400.249, C16.131.621.207.532, C16.131.666.507.400.249

MeSH Unique ID: D058627

Entry Terms:

• Megalencephalies
• Macrocephaly
• Macrocephalies
• Megacephaly
• Megacephalies
• Megalocephaly
• Megalocephalies

Previous Indexing:

• Craniofacial Abnormalities (1994-2010)
• Head/abnormalities (1970-2010)

See Also:

• Hydrocephalus

All MeSH Categories
Diseases Category
Musculoskeletal Diseases
Musculoskeletal Abnormalities
Craniofacial Abnormalities
Megalencephaly
Hemimegalencephaly

All MeSH Categories
Diseases Category
Nervous System Diseases
Nervous System Malformations
Malformations of Cortical Development
Malformations of Cortical Development, Group I
Megalencephaly
Hemimegalencephaly

All MeSH Categories
Diseases Category
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Congenital Abnormalities
Musculoskeletal Abnormalities
Craniofacial Abnormalities
Megalencephaly
Hemimegalencephaly

All MeSH Categories
Diseases Category
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Congenital Abnormalities
Nervous System Malformations
Malformations of Cortical Development
Malformations of Cortical Development, Group I
Megalencephaly
Hemimegalencephaly