Trigonocephaly

Trigonocephaly is a congenital condition due to premature fusion of the metopic suture (from the Greek metopon, "forehead"), leading to a triangular forehead. The premature merging of the two frontal bones leads to transverse growth restriction and parallel growth expansion. It may occur as one component of a syndrome together with other abnormalities, or in isolated form. The term is from the Greek trigonon, "triangle", and kephale, "head".