title: [Tomodensitometry and/or meato-isternography in the diagnosis of small acoustic neuromas (author's transl)].
abstract: Tomodensitometry allowed us to discover smaller and smaller tumors in the cistern and even in the internal auditory canal. We report 5 cases, amongst others, where the tumor is visible in the canal and we show the conditions which are necessary to make the diagnosis. Nevertheless, lipiode meatocisternography is well tolerated if we use between 0.6 and 1.5 ml of oil, and often necessary to confirm the diagnosis of a neuroma. We first use tomodensitometry when the symptoms could be due to a neuroma or another tumor. When the syndrome is characteristic, limited to the contents of the internal auditory canal, we often do the meatocisternography straight away, because in a single examination we know that there is or is not a tumor. We can also check the same time the opposite side.
mesh_terms: D015502:Absorptiometry, Photon / Q000379:methods*; D002946:Cisterna Magna / Q000000981:diagnostic imaging; D006801:Humans; D007459:Iodized Oil; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging*
chemical_list: D007459:Iodized Oil
vernacular_title: Tomodensitométrie et/ou méatocisternographie lipiodolée pour le diagnostic des petits neurinomes de l'acoustique.