[Diagnosis of glomus jugulare tumours (author's transl)].
The present study is based on 16 personal cases and on an analysis of the principal series published since 1968. Clinical investigations aim at detecting lesions of the sensory-motor and XIIth cranial nerves, deafness which indicates invasion of the labyrinth, lesions of central auditory and vestibular pathways and possible associated conditions. Radio-otology is fundamental in revealing alterations of the jugular foramen and above all perhaps, changes in the tympanic bone and in the 3rd segment of the fallopian canal. The most significant sign of invasion is infra-labyrinthic hollowing out on tomographic sections in lateral projection and Guillen's incidence. Angiography and jugulography supply information on the size of the tumour and on its feeding vessels which usually arise from the external carotid artery but also, in advanced forms, from the internal carotid and vertebral arteries. Computerized tomography for the time being has one single major applications : detection of lesions extending to the posterior and middle fossae. Taken together, these investigations should help to classify tumours of the glomus jugulare into : exclusively tympanic, tympano-mastoidal, tumours extending posteriorly and to the petrous bone, and tumours extending intracranially. Such a classification is of paramount importance in deciding on the best surgical approach.
D002339:Carotid Arteries / Q000000981:diagnostic imaging; D003389:Cranial Nerve Diseases / Q000209:etiology; D004432:Ear, Middle / Q000000981:diagnostic imaging; D005925:Glomus Jugulare Tumor / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007601:Jugular Veins / Q000000981:diagnostic imaging; D010236:Paraganglioma, Extra-Adrenal / Q000000981:diagnostic imaging*; D010579:Petrous Bone / Q000000981:diagnostic imaging / Q000473:pathology; D014056:Tomography, X-Ray; D014057:Tomography, X-Ray Computed; D014711:Vertebral Artery / Q000000981:diagnostic imaging
Le diagnostic d'extension des tumeurs du glomus jugulaire.