Heterotopia (medicine)

In medicine, "heterotopia" refers to the displacement of an organ or part of an organ from its normal position, often specifically gray matter heterotopia, the displacement of gray matter into the cerebral white matter or ventricles.

Patients with heterotopic grey matter almost always have seizure disorders.

Heterotopia is often divided into three groups: subependymal heterotopia, focal cortical heterotopia and band heterotopia.