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    • Operative Management of Trigeminal Schwannomas: Based on a Modified Classification in a Study of 93 Cases

    Jie Yin, Yihao Wu,Zhe Zhang,Yu Zhang, Junhua He,Zhijun Yang,Bo Wang, Xinchao Wang,Gemingtian Liu,Zhixu Bie,Pinan Liu

    Acta Neurochirurgica（2023）

    Capital Medical University

    Cited 0|Views21
    Abstract
    Background Advances in microscopic and endoscopic surgical techniques have outpaced traditional classification and transcranial surgical strategies, especially with reference to the treatment of trigeminal schwannomas (TSs). A modified TS classification is proposed and appropriate surgical strategies are discussed. Methods The cases of 93 patients who underwent surgical treatment in Beijing Tiantan Hospital in the previous 6 years were analyzed retrospectively, and a literature review was conducted. Results Classification is based on surgical direction. Tumors were classified as follows: type A, backward orientation, located in the orbit or orbit and middle cranial fossa (8 cases, 8.6%); type B, upward orientation, located in the pterygopalatine fossa, infratemporal fossa or pterygopalatine fossa, infratemporal fossa, and middle cranial fossa (23 cases, 24.7%); type C, forward and backward orientations, located in the middle cranial fossa, posterior cranial fossa or both (58 cases, 62.4%); and type D, located in multiple regions (4 cases, 4.3%). 91.40% of patients underwent gross total resection (GTR) with 29 cases receiving endoscopic resection of whom 93.10% (27/29) experienced GTR. Conclusion The 93 cases were satisfactorily divided into four types, according to tumor location and surgical orientation, enabling safe and effective removal by appropriate surgery.
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    Key words
    Surgical strategy,Trigeminal schwannomas,Classification,Endoscopic,Skull base
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