Abstract
We have experienced acoustic neuroma surgery by middle cranial f ossa approach for 31 cases, among which 29 cases were fresh cases. They were 15 males and 14 females. The age distribution was from 13 to 69 years old with an average of 51.6. Intracanalicular tumor was 2, small 11, middle 7 and large 9. Anatomical preservation of the facial nerve was accomplished in 26 cases. As for the post - operative facial nerve palsy, Grade I was 14, Grade II 7 and Grade III 8 according to House - Brackmann Grading system. Hearing acutiy was preserved in 9 cases. One patient's hearing recovered remarkably after the surgery.
