Int. Adv. Otol. 2009; 5(3); 391-393

. External Auditory Canal Cholesteatoma
 Jacinto Negreiros Jr, Henrique Fernandes Oliveira, Caio Athayde Neves, Carlos Augusto Oliveira

Armed Forces Hospital, Brasilia-DF, Brazil, caioath@yahoo.com.br;

External auditory canal cholesteatoma is an uncommon disease that is characterized by desquamating tissue and bone erosion
in older patients. The lesion could start after a microtrauma in the canal, with consequent squamous epithelium proliferation
and periostitis. Another possibility is the loss of the skin migration property, which causes retainment of desquamated cells.
It is often associated with infection but it generally presents few symptoms. In this paper we present two cases of external auditory
canal cholesteatoma, one of them in a middle age patient, unlike the highest prevalence in older patients.