[Osteoma of the temporal bone as a rare differential diagnosis of a retroauricular tumor].

Extracanalicular osteomas of the temporal bone represent a rare differential diagnosis of osseous tumours in the ear region in contrast to the common finding of exostoses of the external auditory canal. Basing on a report on a retroauricular osteoma of the squama of the temporal bone treated in the authors' ENT clinic, the morphological and clinical characteristics of this tumour are discussed.