Human Phenotype Ontology entry HP_0010537 (Wide cranial sutures) is an abnormally increased width of the cranial sutures for age-related norms (generally resulting from delayed closure). Also known as: Broad cranial sutures, Diastasis of cranial sutures, Large cranial suture, Persistent open cranial sutures, Sutural diastasis, Widened cranial sutures, open cranial sutures.