Toddler with left earache

CT of mastoiditis with Bezold abscess
Axial CT with contrast of the brain with bone windows (left) shows opacification of the left mastoid air cells and the same image with soft tissue windows (right) shows a low density rim enhancing fluid collection at the level of the left mastoid air cells deep to the sternocleidomastoid and trapezius muscles.

The diagnosis was acute mastoiditis with a Bezold abscess.