Issue N# 2 - 2012
OTOLOGY
Cholesteatoma by osteoma of the external auditory canal
Authors : Maliki O, Aderdour L, Ziad T, Nouri H, Rouchdi Y, Marrat A, Raji A, (Marrakech)
Ref. : Rev Laryngol Otol Rhinol. 2012;133,2:93-95.
Article published in french 
Downloadable PDF document french
Summary :
Osteoma in the external auditory canal (EAC) is an uncommon benign tumor. The association of a cholesteatoma with an osteoma of EAC is extremely rare. We report a case of a 26-year-old woman with an osteoma of the left EAC that was complicated by a cholesteatoma in the EAC between the osteoma and left tympanic membrane. Surgical removal of the osteoma and cholesteatoma proved successful by postauricular approach. The follow up without recurrence is 24 months. Osteoma of the EAC is a solitary, unilateral, and slow-growing bony benign tumor. The foremost differential diagnosis is exostose that is multiple and bilateral. Cholesteatoma of the EAC is uncommon. Its basic pathogenesis is a chronic occlusion of the EAC. Surgical treatment avoids complications related to local aggressiveness of cholesteatoma.
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