Endovascular Embolization of Sinus Pericranii Using Plastic Cup During Glue Injection

Background: Sinus pericranii (SP) is a rare abnormal connection between the intracranial and extracranial venous drainage pathways through the osseous channels. Herein we present the case of a patient with growing SP, which was successfully treated using endovascular transvenous embolization through external compression with a plastic cup for preventing glue migration into subcutaneous veins. Case Description: A 9-month-old boy presented with a gradually growing mass on the midline cranial vertex after his birth, for which transvenous embolization was performed. A microcatheter was successfully navigated into the SP from the superior sagittal sinus. Because the subcutaneous drainages were confirmed to be multidirectional, we compressed the drainages through the skin using a plastic cup during the glue injection step for preventing glue migration. Subsequently, the SP was completely obliterated. The postoperative course was uneventful. Conclusions: Manual compression using a plastic cup was useful not only for embolization but also for reducing the physician's exposure to radiation as compared with that in the finger compression method. When a direct puncture is required, a plastic cylinder can also be used.