Sagittal sinus occlusion by intraluminal dural cysts - Report of two cases

Lesions involving the sagittal sinus typically present as masses compressin g the sinus externally. The authors describe two cases of lesions entirely within the lumen of the sagittal sinus. In one of the cases, syncope was th e presenting symptom and surgical resection of the cyst was performed. An e ntirely intraluminal cyst, consistent with a dural cyst, was resected, foll owed by reconstruction of thr sinus and resolution of symptoms. Entirely in traluminal lesions of the sagittal sinus have rarely been reported as incid ental findings. This represents the first report of symptomatic occlusion o f a venous sinus by an intraluminal cyst.