A manual of diseases of the nervous system . 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 spacesin the vicinity. If this is a correct interpretation of the appearanc
A manual of diseases of the nervous system . 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 spacesin the vicinity. If this is a correct interpretation of the appearances,they constitute proof that, even in the human cord, it is possible tohave a new formation of destroyed fibres. That pyramidal fibres maybe renewed after they have been degenerated in consequence of pres-sure, there is abundant clinical evidence, since complete paralysis with * For these sections I am indebted to Dr. F. G. Penrose. U:ifortunately 1 havebeen unable to obtiiiu any other sections of tins part of the cord. ACUTE MYELITIS. 813. Fig. 99.—Ascending myelitis from fracture of spine completely destroying the cordin the mid-dorsal region. A, from the seventh cervical, presents only ascendingdegenerations in post. med. col., direct cerebel. areas, and ascending , from the eighth cervical, prespnts also numerous areas of finely granular aspectunder a low magnifying power, the finer structure of which is shown in Fig. 100.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnervoussystem, bookye
