Summary of clinical characteristics and postoperative results of the 5 patientsa
| Patient No. | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| Sex | F | F | F | M | M |
| Age (yr) | 52 | 57 | 64 | 45 | 53 |
| Symptoms | Deafness, right tinnitus, dizziness | Right earache, hearing loss | Tinnitus, right hearing loss | Tinnitus, right hearing loss | Tinnitus, left hearing loss |
| Tumor side | Right | Right | Right | Right | Left |
| Tumor volume (mm3) | 347.4 | 370.1 | 1941 | 1153 | 460.6 |
| Tumor size (mm) | 15.5 × 7 | 15 × 6.7 | 22 × 17 | 16.2 × 14.6 | 15.5 × 9.8 |
| Extrameatal tumor dimension (mm) | 8.36 × 5 | 4.3 × 6.7 | 17 × 12 | 14.6 × 10.5 | 9.8 × 6.6 |
| Preoperative HB scaleb | I | I | I | I | I |
| Postoperative HB scale | I | I | VI | III–IV | I |
| Koos classificationc | II | II | III | III | II |
Note:—HB indicates House and Brackmann.
↵a Both preoperative and postoperative FN functions are reported according to the scale of House and Brackmann.8
↵b House and Brackmann scale: I (normal), normal facial function in all areas; III (moderate dysfunction), gross: obvious but not disfiguring difference between 2 sides; noticeable-but-not severe synkinesis, contracture, and/or hemifacial spasm. At rest, normal symmetry and tone. Motion forehead: slight-to-moderate movement. Eye: complete closure with effort. Mouth: slightly weak with maximum effort; IV (moderately severe dysfunction), gross: obvious weakness and/or disfiguring asymmetry. At rest: normal symmetry and tone. Motion forehead: none. Eye: incomplete closure. Mouth: asymmetric with maximum effort; VI (total paralysis), no movement.
↵c Classification of Koos et al:9 grade II, small tumor with protrusion into the cerebellopontine angle; no contact with the brain stem; grade III, tumor occupying the cerebellopontine cistern with no brain stem displacement.