RESUMEN
Cholesteatoma and cholesterol granuloma are the most frequent expansive and destructive lesions of the cerebellopontine angle.Less frequent are arachnoid cysts, but likewise they also should be taken into account in a possible differential diagnosis.In this localization, cholesteatoma can cause hypoacusia, buzzing, facial paralysis and dizziness, with or without repeated otorrhea, since in many occasions primary cholesteatomas arise from the extreme of the cerebellopontine angle, with intact timpanic membrane. The aims of this study were the revision of the pertinent literature, to present a clinical case with the respective surgical resolution and the clinical evolution until the present, and also to discuss the different approaches to this pathology