Occlusion of Intracranial Venous Structures

Abstract

Introduction As early as 1828 Ménière¹ described clinical syndromes associated with lesions of intracranial venous structures, and the following year Tonnelle² reported additional studies. In spite of these early reports and the subsequent detailed studies of others,^3-6 clinical conditions attributable to lesions of intracranial venous structures are seldom reported in the literature or recognized clinically. We were unable to find any comprehensive report on the electroencephalographic findings in these conditions at the time this study was begun but subsequently the article by Severini⁷ gave the EEG studies considerable emphasis. In most of the cases reported in the present series the diagnosis was based upon the congruence of the patient's clinical picture with the well-recognized syndromes associated with occlusion of the intracranial venous structures. For the description of the details of the intracranial venous structures and venous circulation the reader is referred to standard text books