Patients usually present with sensorineural hearing loss.
Their pathogenesis is thought to be the same as that of other intracranial lipomas.
The high signal on T1 weighted sequences lends itself to the differential diagnosis of:
- haemorrhagic acoustic schwannoma
- proteinaceous fluid with middle ear / mastoid air cells
- cholesterol granuloma
- 1. Dahlen Richard T., Charles E. Johnson, H. Ric Harnsberger et al. “CT and MR Imaging Characteristics of Intravestibular Lipoma.” AJNR Am J Neuroradiol 23, no. 8 (September 1, 2002): 1413-1417. [Link].
- 2. Vernooij MW, Ikram MA, Vincent AJ et-al. Intravestibular lipoma: an important imaging diagnosis. Arch. Otolaryngol. Head Neck Surg. 2008;134 (11): 1225-8. doi:10.1001/archotol.134.11.1225 - Pubmed citation
Inner ear pathology
inner ear anatomy
- enlarged vestibular aqueduct
- semicircular canal dysplasia
- classification of cochlear anomalies
- infection and inflammation
- trauma and miscellaneous