Analysis Of The Surgical Effect Of Small And Medium-sized Cystic Solid Acoustic Neuroma

Objective: to summarize the experience of microsurgical treatment of small and medium-sized cystic solid acoustic neuroma.Data and mMethods: a total of 80 cases of small and medium-sized acoustic neuroma treated by surgery from June 2014 to June 2018 were retrospectively analyzed,including 28 cases of cystic and 52 cases of solid.The effects of surgical effects,postoperative quality of life and postoperative neurological function were analyzed retrospectively.All patients underwent microsurgical resection of the tumor via the retrosigmoid internal auditory approach.The average postoperative follow-up was 21.7 months(9-48 months).Results of the 80 patients with acoustic neuroma,total tumor resection was performed in 80 cases.Intraoperative facial nerve,trigeminal nerve and petrosal vein were all anatomically preserved,and the anatomical retention rate of cochlear nerve was 65%.There were no operative deaths,2 cases of intracranial infection and 3 cases of cerebrospinal fluid leakage,which were cured after symptomatic treatment.All patients were able to resume normal work within 1 year after surgery.During the follow-up,the tumor recurred in 1 case,and the tumor was completely resected after the second surgery,and the postoperative facial nerve function was still at the level of house-brackmann I.At the last follow-up,the excellent and good rate of facial nerve was 96%,and the effective hearing retention rate was 29%.Thirty-four patients with facial numbness and pain before surgery had their postoperative symptoms relieved or disappeared.Conclusion: For patients with small and medium-sized acoustic neuroma,cystic and solid properties do not affect the anatomical retention rate of facial nerve during operation and the functional retention rate of facial nerve after operation.