Sinus pericranii


Sinus pericranii (SP) is a cranial venous anomaly in which there is an abnormal communication between intracranial dural sinuses and extracranial venous structures, usually via an emissary transosseous vein.

Differential diagnosis:

  • Atretic cephalocele
  • dural fistula or arteriovenous malformation
  • subepicranial varix (dilated scalp venous sac without communication with intracranial dural sinuses)
  • Dermoid or epidermoid sinus
  • Sebaceous cyst
  • Cephalhematoma
  • Infantile hemangioma


  • systemic angiomas
  • craniosynostosis