MYELITIC AND MYELOPATHIC LESIONS

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Abstract
Pathologic changes in the cord due to sclerosis of the spinal vessels (nonsyphilitic) are much less frequent than those in the brain due to disease of the cerebral vessels. In a series of about two hundred cases of cerebral arteriosclerosis which came to necropsy within the last six years, we could find only two which also showed sclerosis of the spinal vessels with myelopathic changes. Myelopathic lesions from partial or complete occlusion of the vessels due to arteritis are more frequent than those due to arteriosclerosis. The changes in the vessels are the result of the direct effect of an infectious or a toxic process on the vessel walls (arteritis). These cases differ from those described under "myelitis" by the fact that in the latter the infectious agents (bacteria or their toxins) produce inflammatory changes in the cord proper. The two most common causes of vascular occlusion are atherosclerosis and

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