[A rare case of an additional diverticulum of the anterior wall of a multispaced maxillary antrum (author's transl)].

A rare case of multispaced maxillary sinus with an unusual anterior additional chamber an a lower orbito-ethmoidal cell, each with its own opening into the anterior cavity is described. Our cases was checked and confirmed radiographically and sinuscopically and a simple operational correction for aesthetic demands was performed.

[Fibrous dysplasia of the facial bones (author's transl)].

On the occasion of three cases of fibrous dysplasia (two of frontal sinus and the ethmoids and one of the upper jaw) the problem of fibrous dysplasia of the jaws is analysed. The clinical picture is characterized by a slow and gradual emergence of facial assymetric or exophathalmos. Histologically there is a variety of form.