[Cerebral tumors and pregnancy. Apropos of 8 cases].

Pregnancy is an aggravating factor for brain tumours on which it acts by three mechanism: acceleration of tumour growth, increase of peritumoral oedema and the immunotolerance to foreign tissue antigens that is proper to pregnancy. Histologically, the brain tumour most frequently encountered is glioma, usually revealed during the third trimester. Brain tumours is pregnant women have no special clinical features, and their diagnosis rests on computerized tomography or nuclear magnetic resonance completed, if required, by stereotactic biopsy.

[Natural history and spontaneous prognosis of cerebral arteriovenous malformations].

Eight large series of patients presenting with untreated cerebral arterio-venous malformations (A.V.M.

[Hydrocephalus with cerebrospinal fluid shunts and pregnancy: 2 cases].

During pregnancy 50% of all cases with a ventriculo-peritoneal shunt malfunction. This is because of anatomo-physiological changes associated with the pregnant state, and shows itself as a rise in intracranial tension. There were no acute neurological complications at term; with the malfunction of the shunt distally, vaginal delivery is preferable.

[Cerebral aneurysms and pregnancy: 4 cases].

Haemorrhagic cerebral accidents are the commonest neurosurgical diagnoses made in pregnancy. The state of pregnancy makes it more likely that an arterial or an arteriovenous aneurysm will rupture and this is the principal cause of most haemorrhages. They occur more often in primiparae in the third trimester of pregnancy.

[Importance of the study of the cytology and proteins of the spinal fluid in lumbago].

In the cerebrospinal fluid (C.S.F.