We describe the case of a 39-year-old man in whom diagnostic work-up for combined right-sided hearing loss revealed a lipoma of the internal auditory canal (IAC). This very ran diagnosis has significant implications for therapeutic management because lipomas, unlike other lesions in the IAC, should not be surgically removed in most cases. We emphasize the importance of the combined use of magnetic resonance imaging and computed tomography to reliably establish the diagnosis of a lipoma, differentiate it from other potential lesions of the internal auditory canal and exclude additional pathologies in the petrosal bone.
TruwitCLBarkovichAJ. Pathogenesis of intracranial lipoma: an MR study in 42 patients. Am J Neuroradiol. 1990; 11 (4): 665–674.
4.
WhiteJRCarlsonMLVan GompelJJ. Lipomas of the cerebellopontine angle and internal auditory canal: Primum non nocere. Laryngoscope. 2013; 123 (6): 1531–1536. doi: 10.1002/lary.23882.
5.
BigelowDCEisenMDSmithPC. Lipomas of the internal auditory canal and cerebellopontine angle. Laryngoscope. 1998; 108 (10): 1459–1469. doi: 10.1097/00005537-199810000-00008.
6.
MukherjeePStreetIIrvingRM. Intracranial lipomas affecting the cerebellopontine angle and internal auditory canal: a case series. Otol Neurotol. 2011; 32 (4): 670–675. doi: 10.1097/MAO.0b013e31821179e0.
7.
FerriGGSavastioGModugnoGC. Lipoma of the internal auditory canal and cerebellopontine angle. Otol Neurotol. 2004; 25 (6): 1027–1028. doi: 10.1097/00129492-200411000-00028.
8.
WongMLLarsonTIBrackmannDE. Lipoma of internal auditory canal. Otolaryngol Head Neck Surg. 1992; 107 (3): 374–376.
9.
DazertSAletseeCBrorsD. Rare tumors of the internal auditory canal. Eur Arch Otorhinolaryngol. 2005; 262 (7): 550–554. doi: 10.1007/s00405-003-0734-4.
