Objective: To study the clinical features and treatment of cystic acoustic neuroma.
Methods: Twenty-two patients with cystic acoustic neuromas were diagnosed by CT and MRI preoperatively, and the tumors were resected by retrosigmoid approach, and verified by pathological studies.
Results: Of the 22 patients, 18 had tumors totally resected (postoperative house Brackman facial nerve grading: grade II in 4 patients, III in 7, IV in 3, V in 2, VI in 2) and 4 had tumors subtotally resected.
Conclusion: Because of its specific clinical features and poor operative results, cystic acoustic neuroma should be regarded as a specific subtype.