Classification and microsurgical treatment of foramen magnum meningioma  

作　　者：Pengfei Wu Yanlei Guan Minghao Wang Luyang Zhang Dan Zhao Xiao Cui Jiyuan Liu Bo Qiu Jun Tao Yunjie Wang Shaowu Ou 

机构地区：[1]Department of Neurosurgery,the First Affiliated Hospital,China Medical University,155 Nanjing Street,Heping District,Shenyang 110001,Liaoning,China

出　　处：《Chinese Neurosurgical Journal》2023年第2期114-126,共13页中华神经外科杂志（英文）

基　　金：supported by the Scientific Research Fund of Liaoning Provincial Education Department(CN)(FWZR2020006)

摘　　要：Background To investigate the classification and microsurgical treatment of foramen magnum meningioma(FMM).Methods We retrospectively analyzed 76 patients with FMM and classified them into two classifications,classification ABS according to the relationship between the FMM and the brainstem and classification SIM according to the relationship between the FMM and the vertebral artery(VA).All patients underwent either the far lateral approach(54 cases)or the suboccipital midline approach(22 cases).Results Of the 76 cases,47 cases were located ahead of the brainstem(A),16 cases at the back of the brainstem(B),and 13 cases were located laterally to the brainstem(S).There were 15 cases located superior to the VA(S),49 cases were inferior(I),and 12 cases were mixed type(M).Among 76 cases,71 cases were resected with Simpson grade 2(93.42%),3 with Simpson grade 3(3.95%),and 2 with Simpson grade 4(2.63%).We summarized four anatomical triangles:triangles SOT,VOT,JVV,and TVV.The mean postoperative Karnofsky performance score was improved in all patients(p<0.05).However,several complications occurred,including hoarseness and CSF leak.Conclusion ABS and SIM classifications are objective indices for choosing the surgical approach and predicting the difficulty of FMMs,and it is of great importance to master the content,position relationship with the tumor,and variable anatomical structures in the four"triangles"for the success of the operation.

关 键 词：CLASSIFICATION Anatomical triangles Foramen magnum meningioma Microsurgical treatment Far lateral approach 

分 类 号：R739.45[医药卫生—肿瘤]