The term “parasagittal” implies that a tumour high on the convexity of the hemisphere has extended to involve the wall and possibly the lumen of the sagittal sinus. The difficulties encountered in the surgical removal of these tumours covers a wide range. A meningioma situated far forward in the frontal zone with a blocked sinus often provides a straight-forward surgical excision, however, a large vascular tumour in the parietal region with extensive involvement of the sinus wall with implication of the Rolandic veins and undermining of the sensory and motor areas presents one of the most difficult technical problems that may be encountered within the head and taxes the skills of even the most experienced surgeon.
Unable to display preview. Download preview PDF.