Hemimegalencephaly

**Definition:** Rare MALFORMATIONS OF CORTICAL DEVELOPMENT, GROUP I characterized by the enlargement of one side of the brain. It is associated with seizures, partial paralysis, and mental retardation.

**Tree numbers:** - C05.660.207.536.500 - C10.500.507.400.249.500 - C16.131.621.207.532.500 - C16.131.666.507.400.249.500

**Synonyms:** - Unilateral Megalencephaly - Unilateral Macrocephaly