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✓ Cases of craniosynostosis usually fall into well-demarcated categories: those related to a syndrome or those identified by a combination of suture involvement and morphological appearance. Between 1976 and 1995, 53 (3.6%) of 1474 cases in the craniofacial databank were assessed and designated as nonsyndromic but unclassifiable. The records and radiological studies obtained in these patients were retrospectively analyzed and comparisons were made with patients classified in the databank as having simple craniosynostoses.

It proved possible to divide the formerly unclassifiable cases into two groups: those with “two-suture disease” (Group A) and a “complex” group (Group B) in which more than two sutures were affected. Group A consisted of 36 cases (68%) of patients presenting with clear evidence of simultaneous involvement of two sutures but with no progression over time to suggest a more …