title: [An impressively large trilobulate neuroma of the XIIth cranial nerve (author's transl)].
abstract: The authors present a case of a large neuroma of the hypoglossal nerve of unusual size and weight, the precise nature of which could be defined only after excision, since its cystic surface suggested a diagnosis of cystic lymphangioma. The following special features may be noted: The rarety of neuromas of the XIIth cranial nerve; the influence of the relations of the XIIth nerve with the posterior belly of the digastric and the myloid muscle on development of the neuroma; the false, cystic appearance which may lead to an erroneous diagnosis of tuberculosis, which in itself, would be a contra-indication to puncture for cytological examination of fluid; the tendency to hemorrhage at the time of excision; finally, the possible problems related to nerve section.
mesh_terms: D000328:Adult; D003390:Cranial Nerve Neoplasms / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007002:Hypoglossal Nerve / Q000601:surgery; D008297:Male; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery
vernacular_title: Un neurinome trilobé du XII d'un volume impressionnant.