Cholesteatoma is a cystic pseudotumor. It is consisted of a keratinized squamous epithelium producing keratin masses. It occurs in purulent form of chronic otitis media. It can behave aggressively and cause osteolysis of surrounding structures in the middle ear, such as the middle ear bone, facial nerve channel, inner ear, etc. Diagnosis of cholesteatoma is based on otomicroscopy and the use of modern imaging methods (computed tomography, magnetic resonance imaging). The treatment is surgical and must be radical enough to prevent recurrence of the disease. Despite precise surgical technique, recurrence is relatively frequent, especially in childhood. Early diagnostics and adequate surgical therapy can prevent severe otogenic complications of middle ear inflammation.
Keywords: cholesteatoma; mastoidectomy; otitis media.