Mental retardation
5. Scaphocephaly. There is premature fusion of the sagittal suture as shown by the line of sclerosis and ridging at the site of what should be an open suture (white arrow) resulting in a restriction of growth perpendicular to the suture and an exaggeration of growth parallel to it (scaphocephaly). The coronal (black arrow) and lambdoid sutures (yellow arrow) are still open.