CT scan findings

Frequency (n = 31)

Percent

Middle ear and mastoid opacity, intact bony trabeculae and ossicles

5

16.1%

Lost trabeculae and preserved ossicles

7

22.6%

Eroded ossicles

2

6.45%

Cortex erosion and subcutaneous extension

15

48.4%

Intracranial extension

2

6.45%