[Diagnosis and treatment of cystic acoustic neuroma].

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.