Soma M, Munemoto S, Kuroda E, Hamada Y, Mouri M
Department of Neurosurgery, Ishikawa Prefectural Central Hospital, Japan.
No Shinkei Geka. 1996 Feb;24(2):165-8.
Parasagittal meningiomas often invade the superior sagittal sinus (SSS), but rarely grow inside the SSS as a primary tumor. The authors report a case of parasagittal meningioma growing mainly inside the SSS and presenting papilledema. The SSS is invisible behind the tumor end on the right carotid angiogram but still patent on the left carotid angiogram. The superficial cortical vein on the opposite side works as a collateral pathway. The tumor may have originated from the right wall of the SSS, grew inside the sinus and covered the entrances of the right ascending cerebral veins. V-P shunt was performed after removal of the mass outside the sinus for resolving headache and visual symptoms.
矢旁脑膜瘤常侵犯上矢状窦（SSS），但极少作为原发性肿瘤在上矢状窦内生长。作者报告一例主要在上矢状窦内生长并出现视乳头水肿的矢旁脑膜瘤病例。在右侧颈动脉血管造影中，肿瘤末端后方的上矢状窦不可见，但左侧颈动脉血管造影显示其仍通畅。对侧的浅表皮质静脉起到了侧支循环的作用。肿瘤可能起源于上矢状窦右壁，在窦内生长并覆盖了右侧大脑上行静脉的入口。在切除窦外肿块后进行了脑室-腹腔分流术，以缓解头痛和视觉症状。
