Table 2. Clinical findings in patients with cholesteatoma (N=54).
| Evaluation | Structure | Category | Counts (Percentage) |
| Otoscopy | Tympanic membrane | Attic retraction pocket | 16 (29.6) |
| Posterosuperior quadrant retraction pocket | 28 (51.9) | ||
| Others | 10 (18.5) | ||
| Pure tone audiometry | Right ear | No impairment | 8 (14.8) |
| Slight impairment | 17 (31.5) | ||
| Moderate impairment | 24 (44.4) | ||
| Severe impairment | 5 (9.3) | ||
| Profound impairment | 0 (0) | ||
| Left ear | No impairment | 13 (24.1) | |
| Slight impairment | 10 (18.5) | ||
| Moderate impairment | 23 (42.6) | ||
| Severe impairment | 6 (11.1) | ||
| Profound impairment | 2 (3.7) | ||
| Intraoperative | Scutum | Eroded | 48 (88.9) |
| Normal | 6 (11.1) | ||
| Malleus | Completely necrosed | 12 (22.2) | |
| Partially necrosed | 28 (51.9) | ||
| Intact | 14 (25.9) | ||
| Incus | Completely necrosed | 24 (44.4) | |
| Partially necrosed | 25 (46.3) | ||
| Intact | 5 (9.3) | ||
| Stapes | Completely necrosed | 7 (13) | |
| Partially necrosed | 27 (50) | ||
| Intact | 20 (37) | ||
| Facial canal (vertical) | Eroded | 3 (5.6) | |
| Normal | 51 (94.4) | ||
| Facial canal (horizontal) | Eroded | 4 (7.4) | |
| Normal | 50 (92.6) | ||
| Sinus plate | Eroded | 4 (7.4) | |
| Normal | 50 (92.6) | ||
| Mastoid | Sclerosed | 39 (72.2) | |
| Pneumatized | 15 (27.8) | ||
| Lateral semicircular canal | Eroded | 2 (3.7) | |
| Normal | 52 (96.3) | ||
| Posterior wall of external auditory canal | Eroded | 7 (13) | |
| Normal | 47 (87) | ||
| Tympanic Membrane | Abnormal | 51 (94.4) | |
| Normal | 3 (5.6) |