Department of Clinical Neurosciences, Service of Neurosurgery, Lausanne University Hospital and University of Lausanne, CHUV, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland.
Acta Neurochir (Wien). 2022 Sep;164(9):2505-2509. doi: 10.1007/s00701-022-05236-4. Epub 2022 May 14.
Falcotentorial meningiomas are rare tumors that arise at the junction of the dural folds of the tentorium and falx cerebri, at the junction of the vein of Galen with the straight sinus with possible extensions along the course of the straight sinus. Surgery of falcotentorial meningiomas remains challenging due to the intimate neurovascular relationships in the posterior incisural space.
We describe the key steps of the occipito-transtentorial approach for falcotentorial meningiomas with a video illustration. The surgical anatomy is described along with the advantages and limitations of this approach.
The occipito-transtentorial approach offers good surgical exposure and outcomes in carefully selected patients harboring falcotentorial meningiomas. Precise understanding of the relationship between the tumor and the internal cerebral veins, basal veins, and vein of Galen should be thoroughly analyzed as these structures may be infiltrated or displaced.
小脑幕镰旁脑膜瘤是一种罕见的肿瘤,起源于小脑幕和大脑镰的硬膜褶皱交界处,在大脑大静脉与直窦交汇处,可能沿着直窦的走行延伸。由于后正中切迹空间的神经血管关系密切,小脑幕镰旁脑膜瘤的手术仍然具有挑战性。
我们通过视频演示描述了枕经天幕入路治疗小脑幕镰旁脑膜瘤的关键步骤。描述了手术解剖结构,以及该入路的优缺点。
在仔细选择的患者中,枕经天幕入路可提供良好的手术显露和结果,这些患者患有小脑幕镰旁脑膜瘤。应仔细分析肿瘤与大脑内静脉、基底静脉和大脑大静脉之间的关系,因为这些结构可能被浸润或移位。