Table 1 Distribution of cases, age, gender, and side (N = 48)*
Classification | N (%) | Age† | ♀/♂ | Right/Left |
|---|---|---|---|---|
Primary | 25 (52) | 57 (33 to 82) | 13/12 | 12/13 |
Secondary | 23 (48) | - | 14/9 | 9/14 |
postoperative | 9 (19) | 39 (16 to 56) | 5/4 | 4/5 |
postinflammatory | 5 (10) | 48 (17 to 63) | 3/2 | 1/4 |
postirradiatory | 7 (15) | 56 (32 to 66) | 5/2 | 3/4 |
posttraumatic | 2 (4) | 16 (15 to 17) | 1/1 | 1/1 |