[Contribution of magnetic resonance imaging in the evaluation of chronic otitis]. / Apport de l'imagerie par résonance magnétique dans le bilan des otites chroniques.

Thirty four patients with a chronic otitis were evaluated prospectively by magnetic resonance imaging (MRI) to delineate its contribution in the diagnosis of middle ear masses. The results were correlated to the CT and the surgical and pathological findings. MRI permitted to differentiate the inflammatory tissues from either cholesteatoma, cholesterol granuloma and cerebromeningeal hernia.

[Meningocerebral hernia and defects of the tegmen. Diagnosis and surgical treatment]. / Hernies méningo-cérébrales et brèches du tegmen. Diagnostic et cure chirurgicale.

Eight defects of the tegmen tympani or antri have been operated on during the last two years. Among these cases, 4 brain herniae were associated with the defect of the tegmen. Magnetic resonance imaging permitted to evaluate accurately the space occupying lesions into the mastoid cavity and disclosed the brain and/or meningeal herniations. The defect of the tegmen was oblitered through a middle fossa approach whereas the hernia was resected through a mastoid approach when necessary.