Crouzon disease associated with sinus pericranii: a report on identical twin sisters.

Crouzon disease is a form of craniosynostosis with the autosomal dominant mode of inheritance. Among the anomalies associated with craniosynostosis, aberrant dural sinus is well known. We report on identical twin sisters with Crouzon disease and sinus pericranii who were successfully treated surgically. In one of the sisters hydrocephalus was present, which eventually needed a shunt operation. The association of these anomalies is discussed.