[Intracranial XXXX manifesting as a rapidly enlarging extracranial soft tissue @entity66 ].

@entity1 @entity66 @entity548 @entity2698 @entity4 @entity5 @entity75 @entity51 @entity690
@entity2698 is a highly vascular and rapidly growing @entity5 , which tends to recur at distant locations. Complete surgical resection is often difficult because of intraoperative excessive @entity548 or @entity4 . A 31-year-old male presented with @entity690 manifesting as a rapidly enlarging extracranial soft tissue @entity66 causing a subcutaneous mass in the forehead. Computed tomography (CT) and magnetic resonance (MR) imaging demonstrated a lesion in the frontal lobe. Careful follow up was performed because the @entity1 suffered no @entity51 . The subcutaneous mass rapidly enlarged for 6 months. CT and MR imaging showed an osteolytic @entity75 with an extradural soft tissue component. Angiography demonstrated obstruction of the superior sagittal sinus and dense @entity5 staining with slow circulation and venous drainage. Gross total surgical resection was performed following endovascular embolization of the feeding arteries. Histological examination demonstrated an @entity2698 . Although rare, @entity2698 should be included in the differential diagnosis of rapidly enlarging subcutaneous mass. Preoperative endovascular treatment may allow less invasive surgery.
