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Hemangiomatous anomaly of bone in Crouzon's syndrome: case report.

A striking and diffuse hemangiomatous architecture was identified by microscopic examination of bone specimens obtained at cranial synostectomy and from the craniofacial area of a young boy with Kleeblättschadel deformity and Crouzon's syndrome. A retrospective review of the histopathological appearance of bone specimens from other patients with Crouzon's syndrome treated on our service and a review of the literature on craniosynostosis suggest that the hemangiomatous pattern seen in this patient is rare if not unique. The unusual pathological findings provide evidence that the underlying pathophysiology of this disorder may be heterogeneous.