The extraordinary importance of computer tomography for the study of brain tumors is well known, but it seems even more significant for the diagnosis of congenital tumors of the dermoid cyst type. Although until lately these tumors were considered rare, we have diagnosed more cholesteatomas since possessing a CT scan than we did during the proceding twenty years, since the notion of rarity was perhaps due to the limitation of the clinical radiologic signs, it must be reconsidered.
KeywordsIschemia Sponge Cholesteatomas
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