Radiologic Appearance of Cranial Involvement of Rosai-Dorfman Disease.

Rosai-Dorfman disease is very an important histoproliferative disorders. It rarely involves cranial and facial bones. It can make intracranial and extracranial region extension. Therefore, it can mimic dermal and dural pathologies. Target sign is an important sign for diagnosis on computed tomography and magnetic resonance imaging.