Site

Endoscopic

CWU

CWD

Combined

Total

Attic

25 (80.6%)

22 (44.9%)

14 (33.3%)

5 (83.3%)

66 (51.6%)

Extension into sinus tympani

12 (38.7%)

13 (26.5%)

7 (16.7%)

1 (16.7%)

33 (25.8%)

Extension into facial recess

7 (22.6%)

7 (14.3%)

4 (9.5%)

1 (16.7%)

19 (14.8%)

Extension into Prussak’s space

4 (12.9%)

14 (28.6%)

1 (2.4%)

0 (0.0%)

19 (14.8%)

Extension into hypotympanum

0 (0.0%)

2 (4.1%)

2 (4.8%)

0 (0.0%)

4 (3.1%)

Extension into mastoid

5 (16.1%)

16 (32.7%)

27 (64.3%)

6 (100.0%)

54 (42.2%)