Neurologists have recently focused considerable attention on the third ventricle, but their interest has been confined largely to a search for important autonomic nuclei believed to be located within its walls. Less attention has been paid to the structure of the ventricle itself and to its relation to the meninges and their cisternae. It has been largely overlooked that the floor of the third ventricle is so thin as to constitute a vulnerable point at which the slightest lesion may penetrate the ventricle and permit the cerebrospinal fluid to flow freely into the surrounding cisternae. Dandy1 long ago made practical use of this fact in the treatment of internal hydrocephalus by puncturing the floor of the ventricle so that the fluid might drain into the cisterna interpeduncularis and the cisterna chiasmatis. Investigation of the factors involved in the production of diabetes insipidus led us to study in more detail
RICHTER CP, BENJAMIN JA. THE THIRD VENTRICLE: CONFORMATION OF THE FLOOR AND ITS RELATION TO THE MENINGES. Arch NeurPsych. 1934;31(5):1026–1037. doi:10.1001/archneurpsyc.1934.02250050144005
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