Diagnosis: Band heterotopia

Band heterotopia is specific form of gray matter heterotopia in which there is arrest of gray matter migration resulting in a symmetric band of subcortical gray matter which has been referred to as the "double cortex sign". There may be some associated cortical pachygyria. Clinically patients are developmentally delayed, often with a seizure disorder. An association with the Lennox-Gastaut syndrome has been reported. This syndrome consists of age related epileptogenic encephalopathy which manifests as multiple types of generalized seizures with progressive cognitive decline. Related Cases

Barkovich AH, Jackson DE, Boyer RS. Band heterotopias: a newly recognized neuronal migration anomaly. Radiology May 1989; 171(2):p455-8.

Dulac O, N'Guyen T. The Lennox-Gastaut Syndrome. Epilepsia, 1993; 34 Suppl 7: pS7-17.

Ricci S, Cusmai R, Fariello G, Fusco L, Vigevano F. Double cortex. A neuronal migration anomaly as a possible cause of Lennox-Gastaut syndrome. Arch Neurol, Jan 1992; 49(1):p61-4.

Heterotopia Schizencephaly Lissencephaly