Microsurgical Treatment Of Foramen Magnum Meningiomas

Objective: To investigate the clinical characteristics and microstructure ofthe foramen magnum meningiomas neurosurgery treatment to improve tumorcut rate, to reduce mortality and morbidity.Methods: Summing up the eleven cases of clinical manifestations offoramen magnum meningiomas, neuroimaging features, the methods ofmicroscopic surgical approaches, and the postoperative treatment. In all cases,patients were operated on by microsurgical resection of the tumor with generalanesthesia. Selecting two operation plan: suboccipital far lateral approach,suboccipital midline approach.Results: Having achieved microscopic total resection in11cases, subtotal1cases, subtotal cases, the operation result was satisfactory. In addition, thesuboccipital far lateral approach six cases and two cases of suboccipital midlineapproach were adopted in the operation.Conclusion: Through applying proficiently the foramen magnummicrosurgical anatomy and microsurgical technique, the operative mortalityand complications were greatly reduced, the tumor resection rate was increasedsignificantly, and most patients can be cured. Applying a reasonable surgicalapproach and microsurgical techniques is a guarantee for the success of thesurgery. The far lateral approach for the foramen magnum District ventraltumor resection has the following advantages: a wide range of surgicalexposure, less damage, less time-consuming, high security, the low probabilityof occurring after infection and cerebrospinal fluid leakage. Selecting anappropriate operating clearance is conducive to the excision of the tumor andreducing surgical injury. The protection of brainstem, vertebral arteries, basilar artery and lower cranial nerve during surgery can reduce surgical mortality andthe probability of postoperative complications.