Trigonocephaly

Trigonocephaly
Trigonocephaly in a boy with 1q22–1q23.1 duplication
Specialty	Medical genetics

Trigonocephaly is a congenital condition due to premature fusion of the metopic suture (from Ancient 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 Ancient Greek trigonon 'triangle' and kephale 'head'.