Sinus pericranii with facial involvement-A great mimicker.

Sinus pericranii is a rare vascular anomaly characterized by an abnormal communication between the intra- and extracranial venous systems through a calvarial defect(s). We present three cases of congenital sinus pericranii with facial involvement, emphasizing its cutaneous presentation with diagnostic pitfalls and discuss the multidisciplinary management of this vascular anomaly.