. A manual of diseases of the nervous system. 422 SPINAL CORD. piimary degeneration of the nerve-fibres even when it closely simulatesthe aspect of meningitic invasion. In slight cases it is difficult to distinguish any changes in the greymatter of the cord, although it is probable that there is some atrophyof the nerve-cells and fibies in the posterior horn in many structural changes can be discerned in more advanced cases(as Lockhart Clarke first showed), and the posterior commissuremay be reduced in size. The posterior vesicular column also showsdistinct degeneration in many c
. A manual of diseases of the nervous system. 422 SPINAL CORD. piimary degeneration of the nerve-fibres even when it closely simulatesthe aspect of meningitic invasion. In slight cases it is difficult to distinguish any changes in the greymatter of the cord, although it is probable that there is some atrophyof the nerve-cells and fibies in the posterior horn in many structural changes can be discerned in more advanced cases(as Lockhart Clarke first showed), and the posterior commissuremay be reduced in size. The posterior vesicular column also showsdistinct degeneration in many cases. Some atrophy of the plexusof fine fibres contained in this column is said to be almost invariable(Lissauer), but frequently the cells and vertical fibres waste, andsometimes only a few shrunken cells, scattered through a trans-lucent nucleated tissue, may remain. The atrophy of the cells issaid to be especially associated with sclerosis of the direct cerebellartract; also (but on slighter evidence) with that of large fibres inthe pyram
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnervoussystem, bookye
