Examination of Microsugical Operatios on Patients with Tumors in Cerebelloponfine Angle Area and of Methods on Preservation of Facial Nerves

Objective To explore the microsurgery approaches employed in operations dealing with tumors in abnormal size in cerebelloponfine angle area,and the relative techniques for the preservation of facial nerves in the same operations as well as the clinical performance as the result of the employment of the method of monitoring facial nerves in operations.Methods Clinical data with regard to 23 patients who were resected of tumors in abnormal size in their cerebelloponfine angle area after operations conducted with microsurgical techniques were examined and analyzed.Results Among the 23 patients,18 were resected completely of their tumors and 5 of them were partly resected with the assistance of microscope.In the 18 cases mentioned above,the facial nerves of 12 patients were anatomically preserved in operations supported by the technique of eletroneurophilogy monitoring,7 couldn't be cured of their facial paralysis 3 months after their operations,5 were monitored on their facial nerves,5 were anatomized and their facial nerves were preserved,and 1 couldn't be cured of his facial paralysis 3 months after his operation.For all the 23 patients,the cases in which facial nerves were anatomically preserved account for 73.9% and the cases in which the function of patients facial nerves were preserved account for 65.2%,with no occurrence of the incident of death during operations and 8 unlucky enough to have to suffer facial paralysis.Conclusion An appropriate method combined with effective application of techniques considering microsurgery and monitoring facial nerves in the process of operating was significant in terms of preserving the essential structures around the cerebelloponfine angle area and keeping facial nerves functioning well.