[Sinus pericranii. A case report].

Introduction: Sinus pericranii is an unusual vascular anomaly characterised by communication between diploic and epicranial veins and a dural sinus. It is therefore an abnormal communication between the intracranial and extracranial circulatory systems.
Case Report: We report a case of sinus pericranii in an 8-month-old boy, with typical clinical and radiological manifestations.
Conclusions: Sinus pericranii is a rare condition in paediatric pathology, which is generally asymptomatic and is usually found in the area of the anterior fontanelle. The fundamental diagnostic method is magnetic resonance imaging of the brain with and without contrast; surgery is the preferred treatment, although rare cases of spontaneous thrombosis have been reported.