<unk>  is diagnosed by a medical doctor by physical examination of the ear. A CT scan may help to rule out other, often more serious causes for the patient's clinical presentation. Non-ionizing radiation imaging techniques (MRI) may be suitable to replace a CT scan, if determined necessary by a physician.
Cholesteatoma
Orbital cellulitis
Orbital lymphoma
Odontogenic keratocyst
Tympanosclerosis
Pseudolymphoma
Periorbital cellulitis
Rectovestibular fistula