[Meningovascular syphilis. Apropos of 4 cases].

In four cases of stroke, it is only the systematic practice of serologic tests for syphilis that has permitted the true diagnosis and the true treatment. We observed cerebral, brain-stem and medullar infarction and one case of cerebellar haemorrhage. Meningo vascular syphilis is now the most frequent of the central nervous system lesion. Cerebrospinal fluid is always abnormal in active disease. The decrease of cell count is the best control of the treatment that needs high doses of Penicillin G.