[Pneumoencephalos: etiology, pathologic significance and diagnosis. Apropos of 13 observations]. / Neumoencéfalos: etiología, significado patológico y diagnóstico. A propósito de 13 observaciones.

Thirteen cases of pneumoencephalos attended at our hospital in a four-year period are reported. All the cases were men; mean age was 47.2 years. The most frequent cause was injury (seven cases) followed by surgical procedures (five cases); in one case, pneumoencephalos was secondary to barotrauma. In the initial period, the most frequent clinical features were impairment of level of consciousness and psychomotor agitation (84%), whereas in the established period, deep coma (Glasgow scale less than or equal to 7) predominated in 69% of patients. Only 16% of patients complained of headache. The most frequent localization of gas was in subdural space (54% of cases) followed by subarachnoid space (23% of cases). Twenty-three percent of patients presented tension pneumoencephalos. With respect to distribution of gas, 53% of patients presented pneumatocele, 38% of patients had pneumoencephalos, and 15% presented a laminar distribution of the gas. Pneumoencephalos is usually associated to a high mortality rate; 53% of our patients died. In the postsurgical group, mortality rate was 60% and in the posttraumatic group, mortality rate was 43%.

[Hemifacial spasm disclosing neurinoma of the hypoglossal nerve]. / Spasme hémifacial révélateur d'un neurinome du nerf hypoglosse.

A hemifacial spasm was symptomatic of a neurinoma of the hypoglossal nerve in a 50 year-old woman. It disappeared after the surgical cure of the tumor. Hemifacial spasm is not mentioned among the 19 cases of neurinoma of the hypoglossal nerve which have been reported up to now. The spasm could have been due to the compression of the 7th nerve by the anterior inferior cerebellar artery, displaced by the tumor.

[Intracranial neurinoma of the spinal nerve (author's transl)]. / Neurinome intracranien du nerf spinal.

A patient aged 56 years has developed a syndrome affecting the last cranial nerves--IX, X, XI and XII--on the left side progressively over the last two years, and, more recently, deafness. Apart from a simple radiological examination all other radiological tests were negative. The diagnosis was made during the surgical operation which revealed a neurinoma of nerve XI (spinal) in its intracranial path. The diagnosis was confirmed histologically. After reviewing the published literature, the authors conclude that this is an exceptional case, which justifies publication and enables differential diagnosis to be made between this tumor and the Jugular Glomus tumor.

[Sensory-motor intermittent claudication syndrome of the cauda equina. Etiopathogenetic study of 25 cases]. / Syndrome de claudication intermittente sensitivo-motrice de la queue de cheval. Etude étiopathogénique de 25 cas.

The twenty-five patients with the intermittent claudication syndrome of th cauda equina included 19 men and 6 women aged from 23 to 70 years. The results of operation were very good in 16 cases, with improvement in 6 others and failure in 3 cases. There are various mechanisms which can cause the stenosis. The authors stress the importance of congenital vertebral abnormalities and the presence of apophyseal appendices which, at the present time, have not been considered responsible.