. A manual of diseases of the nervous system. the eighth cervical (Fig. 103, b) opaquetracts extend through the grey and white matter, and adjacent tothese there is everywhere an extensive destruction of nerve-fibres. Inthese tracts within the lateral columns a large number of very minutenerve-fibres can be seen, each consisting of a fine axis-cyhnder sur-rounded by myelin (Fig. 104, c). The fibres are smaller than anymet with in the normal cord. The appearance is as if there hadbeen an irregular ascending myelitis, which had extended up thecord as high as between the seventh and eighth cervic
. A manual of diseases of the nervous system. the eighth cervical (Fig. 103, b) opaquetracts extend through the grey and white matter, and adjacent tothese there is everywhere an extensive destruction of nerve-fibres. Inthese tracts within the lateral columns a large number of very minutenerve-fibres can be seen, each consisting of a fine axis-cyhnder sur-rounded by myelin (Fig. 104, c). The fibres are smaller than anymet with in the normal cord. The appearance is as if there hadbeen an irregular ascending myelitis, which had extended up thecord as high as between the seventh and eighth cervical segments,and from the lower extremity of the normal fibres there had occurreda growth of new fibres such as effects the regeneration of nerves.*We seem to have here an actual process of renewal of fibres that hadbeen destroyed by such inflammation as has caused the empty spaces * For these sections I am indebted to Dr. F. G. Penrose. Unfortunately I havebeen unable to obtain any other sectious of this part of the cord. ACUTE MYELITIS. 857. Fig. 103.—AscendnigmvelUisfroTn spine completely destroying the cordin the iniddorsal region. A, from the seventh cervical, presents only ascendingdegenerations in post. med. col., direct cerebel. areas, and ascending , from the eighth cervical, presents also numerous areas of finely granuLir aspectunder a low magnifying power, the finer structure of which is shown in Fig. 104.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnervoussystemdisease
