[Tumors of the cerebellopontile angle, with the exception of acoustic neuromas].

Based on a review of 38 cases of tumors of pontocerebellar angle, excluding acoustic neurinoma, and a literature review, clinical, radiologic and therapeutic characteristics of these lesions are described. Diagnosis depends on accurate pre-operative identification of the type of tumor. Based on frequency data it can be estimated that tumors of pontocerebellar angle are nearly always acoustic neurinomas : this infers that these other tumors of the angle represent a differential diagnosis where major orientation signs are radiologic. This is fundamental, since when considering all tumors of pontocerebellar angle those requiring a totally different approach to treatment than that for acoustic neurinomas must be distinguished from those for which inability to identify them is not of marked importance since their operatibility is identical.