[The interest of CSF examinations in the etiological diagnosis of intracranial hypertension (author's transl)].

The authors discuss the case of a 15-year-old girl suffering from intra-cranial hypertension. Neuroradiological examinations do not reveal any obstruction in the cerebral spinal fluid circulation. The CSF cylologic examination was the first to give etiological indications, showing the existence of malignant cells which the cerebral biopsy later enabled us to classify as glioblastoma.

[Disabling segmental occlusion of the vertebral artery. Surgical treatment using a venous by pass from the external carotid to the C1-C2 portion if the vertebral artery (2 cases) (author's transl)].

The authors report the cases of two patients who were severely disabled due to signs and symptoms of vertebrobasilar insufficiency caused by unilateral segmental occlusion of one vertebral artery. The patency of the occluded vertebral artery beyond C3 was demonstrated by a faint angiographic injection through anastomic ascending cervical arteries which provided insufficient blood supply. The opposite vertebral artery was abnormal in both cases: a proximal kinking with intracranial atheromatous stenosis in the first and an atheromatous ostial stenosis in the second one.