Experience in the Surgery of Acoustic Neurinoma.
- Author:
Young Seob CHUNG
1
;
Kil Soo CHOI
Author Information
1. Department of Neurosurgery, College of Medicine, Seoul National University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Acoustic neurinoma;
Clinical features;
Surgical results
- MeSH:
Acoustics*;
Age Distribution;
Brain Stem;
Facial Nerve;
Hearing;
Humans;
Mortality;
Neuroma, Acoustic*;
Tomography, X-Ray Computed
- From:Journal of Korean Neurosurgical Society
1985;14(1):131-138
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The authors reviewed forty cases of acoustic neurinomas operated on from July 1974 to June 1984, analyzing our data obtained during 10 years in the following three periods: 1974 to 1978, 1978 to 1981, 1981 to 1984. A suboccipital approach was used for the removal of acoustic neurinomas in all cases. 1) A peak in the age distribution was seen at 40-50 years of age and no sexual difference was present. 2) The earliest symptoms were hearing loss(50%), headaches(25%), tinnitus(15%) in order of frequency. The time between onset of complaints and admission was mostly within 5 years(83%). 3) Most of the patients had large tumors(78%), greater than 3cm, of whom 4 patients were free of cerebellar and brain stem dysfunction. 4) Total removal was carried out in 27 out of 40 patients(67%) and particularly in 8 out of 14 patients(57%) with large tumors greater than 5cm. The total mortality was 7.5%. 5) In the last 3 years with the advance of microsurgical technique and CT scan, 25 patients were operated on only with a single death and total removal was carried out in 20 out of 25 patients. 6) In total removal, the total mortality was 7.4% and the mortality was 8% in patients with 3-5cm sized tumors and 13% in patients with tumors greater than 5cm, particularly 5% in the recent 3 years. 7) Preservation of the facial nerve following total removal was achieved in 59%. In the recent 3 years, the facial nerve was preserved in 65%. In the large tumors, 3-5cm sized and greater than 5cm, the rates of 75% and 37% were obtained.
