[Clinical and therapeutic pitfalls of a bilateral acoustic neurinoma (author's transl)].

A case of bilateral fluctuating deafness accompanied by vertigo and assumed to be Menier's syndrome, a diagnostic hypothesis supported by the effectiveness, on repeated occasions, of medical treatment. In fact, progressive worsening of hearing led to the finding of a bilateral perceptive deafness with a complex vestibular syndrome, whilst tomograms of the petrous temporal bones revealed bilateral acoustic neurinomas. The results of special investigations in this case are analysed: audiometry, Sisi (?) test adaptation, nystagmography, in the light of the radiological findings.

[Facial nerve neurinoma masked by otosclerosis (author's transl)].

A case of operation for presumed otosclerosis. Discovery of a neurinoma between the branches of the stapes probably originating from the geniculate. Facial paralysis was not present either before or after the operation which, in fact, was only partial (a more extensive operation was refused later on).

[Rhinological surgical approach to the nasal ducts (author's transl)].

An obstruction along the nasal duct can be approached and removed by an operation through the nose: Rouge's technique for access to the orifice below the inferior turbinate, incision of the mucosal diaphragms over a sound passed into the nasal duct, insertion of a drainage tube; all under microscopic observation.