Abstract:ObjectiveTo investigate the microsurgical treatment and clinical features of cystic acoustic neuroma.MethodsClinical data of 69 patients with cystic acoustic neuromas treated by microsurgical procedures in our department from Jan. 2013 to Dec. 2017 were analyzed retrospectively. Suboccipital retrosigmoid approach was adopted in all patients.ResultsTotal tumor resection was achieved in 61cases (88.4%, 61/69), subtotal resection in 6 (8.7%, 6/69) and partial resection in 2 (2.9%, 2/69). Facial nerve was preserved anatomically in 64 cases with a preservation rate of 92.7%. Two weeks after operation, all patients received evaluation of facial nerve function according to the HouseBrackmann (HB) grading system. Of them, 47 cases (68.1%) were HB gradeⅠⅡ, 16 cases (23.2%) were ⅢⅣand 6 cases (8.7%) were ⅤⅥ. Postoperative dysfunction of cranial nerves Ⅸ to Ⅻ occurred in 4 cases (5.8%). Moreover, practical hearing was preserved in 4 cases (5.8%).ConclusionThe treatment of cystic acoustic neuroma should aim at early total surgical resection of tumors and preservation of neurological function. In addition, competent microsurgical skills, appropriate surgical approach, as well as modern surgical instruments are crucial for curative effect of operation and preservation of nerve function.
