Mastoiditis

Otitis media

and mastoiditis of the right side (left side in image). 44-year-old woman.

Infant with

left otitis media and left neck swelling. Axial and coronal CT with contrast of the neck with soft tissue windows (above) show extensive left cervical adenopathy and inflammation. Axial CT with contrast of the neck with bone windows (below) show bilateral complete opacification of the mastoid air cells and subtle erosive changes in the anterior aspect of the left temporal bone. There were no intracranial findings.The diagnosis was left coalescent mastoiditis.

School ager

with pus draining from the right ear. Axial CT with contrast of the brain with bone windows (left) shows opacification and destruction of the right mastoid air cells while axial CT with contrast of the brain with soft tissue windows (right) shows a large low density ring enhancing lesion in the right cerebral hemisphere that is causing midline shift to the left.The diagnosis was right coalescent mastoiditis with an intracranial abscess.

Imaging of

parotid anomalies in infants and children. Fusobacterium necrophorum infection. Right otomastoiditis complicated by subperiosteal abscess [orange arrow], sigmoid sinus thrombosis [red arrow] and temporomandibular arthritis [white arrow] leading to cheek swelling, on axial, parasagittal and frontal CT images, after intravenous injection of contrast medium (a, b and c)

Coalescent

mastoiditis • Mastoiditis - Ganzer Fall bei Radiopaedia

Acute

mastoiditis • Otomastoiditis and enlarged vestibular aqueducts - Ganzer Fall bei Radiopaedia

Toddler with

otitis media. Axial CT without contrast of the face (left) shows partial opacification of the ethmoid sinuses and complete opacification of the mastoid air cells bilaterally. The lateral wall of the left mastoid is irregular in contour. Axial CT without contrast (right) shows an inflammatory soft tissue mass around the left ear.The diagnosis was bilateral mastoiditis with left coalescent mastoiditis.

Otomastoiditis

• Otomastoiditis with Bezold abscess - Ganzer Fall bei Radiopaedia