Lissencephaly is a term used to mean smooth brain - relative abscence of sulci and a poorly formed sylvian fissure.
As would be expected from such a profound disturbance of brain anatomy there is mental retardation, microcephaly and failure to thrive.
Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page