Tumours of the deep lobe, the section of the parotid located within the plane of the facial nerve, are not very frequent. Their diagnosis is difficult and seldom early, and their treatment involves complex technical problems. They evolve in one of two forms: as a tumour of the parapharyngeal space, or as a "dumb-bell" tumour with protrusion in the preauricular zone. Typical cases of both topographical possibilities are presented in this paper.