If lesions are typical, non-extensive and with no detriment to hearing, investigation into the condition is rarely required. Audiometry is used to determine the extent of hearing loss, if any. Tympanometry produces tympanograms which can be different when<unk>  is present. Computerised tomography (CT) can be used to determine if disease is present in the middle ear. Whilst hearing loss is a common symptom in many diseases of the ear, for example in otosclerosis (abnormal bone growth in the ear), the white, chalky patches on the tympanic membrane are fairly characteristic of<unk> . Cholesteatoma is similar in appearance but the whiteness is behind the tympanic membrane, rather than inside. Classification Myringosclerosis refers to a calcification only within the tympanic membrane and is usually less extensive than intratympanic<unk> , which refers to any other location within the middle ear such as the ossicular chain, middle ear mucosa or, less frequently, the mastoid cavity.
Tympanosclerosis
Vestibular adenitis
Orbital emphysema
Tympanites
Rectovestibular fistula
Surfer's ear
Nasal vestibulitis
Cochlear hydrops