Site

Endoscopic

CWU

CWD

Combined

Total

Attic

18 (78.3%)

22 (52.4%)

14 (35.0%)

4 (80.0%)

58 (52.7%)

Extension into Sinus Tympani

8 (34.8%)

9 (21.4%)

7 (17.5%)

1 (20.0%)

25 (22.7%)

Extension into Facial Recess

5 (21.7%)

6 (14.3%)

3 (7.5%)

1 (20.0%)

15 (13.6%)

Extension into Prussak’s Space

4 (17.4%)

13 (31.0%)

1 (2.5%)

0 (0.0%)

18 (16.4%)

Extension into Hypotympanum

0 (0.0%)

2 (4.8%)

2 (5.0%)

0 (0.0%)

4 (3.6%)

Extension into Mastoid

3 (13.0%)

13 (31.0%)

26 (65.0%)

5 (100.0%)

47 (42.7%)