Sinus pericranii (SP) is a rare disorder characterized by a congenital (or occasionally, acquired) epicranial venous malformation of the scalp.
Sinus pericranii typically presents as soft palpable masses along the midline skull, which may fluctuate in size depending on body positioning.
No evidence of associated anomalies, such as cerebral venous malformations, systemic angiomas, venous angioma dural malformations, internal cerebral vein aneurysms, and cavernous hemangiomas support the hypothesis of a spontaneous origin in the current case of SP.
The varicosities are intimately associated with the periosteum, are distensible, and vary in size when changes in intracranial pressure occur.
The surgical treatment involves the resection of the extra-cranial venous package and ligation of the emissary communicating vein.