Straight sinus meningioma.

Successful removal of a meningioma arising from the straight sinus is described. The tumor was removed via a combined right occipital craniotomy and suboccipital craniectomy. The occluded straight sinus and an unusual vein draining the Galenic system to the superior sagittal sinus were demonstrated angiographically. Various kinds of visual symptoms appeared after the operation, but these gradually cleared.