. Diseases of infancy and childhood . e continuation or the prolongation of acutesoftening of the cord. ]t is here that we find bed-sores as well as disturb-ances ol iho bladder and bowels. Treatment.—The troatnuMit consists in what has boon previously ad-vised in the acute condition. Life can only be prolonged by giving tone tothe system wiih proper food. 766 DISEASES OF THE NERVOUS SYSTEM. iMalfokmation of Till-: Sllnal Colli) (Stlna Bifida). The most frequent malformation seen is spina bifida. It affects thevertebral canal and ends in a protrusion of a sma-ll or large soft tumor filledwith
. Diseases of infancy and childhood . e continuation or the prolongation of acutesoftening of the cord. ]t is here that we find bed-sores as well as disturb-ances ol iho bladder and bowels. Treatment.—The troatnuMit consists in what has boon previously ad-vised in the acute condition. Life can only be prolonged by giving tone tothe system wiih proper food. 766 DISEASES OF THE NERVOUS SYSTEM. iMalfokmation of Till-: Sllnal Colli) (Stlna Bifida). The most frequent malformation seen is spina bifida. It affects thevertebral canal and ends in a protrusion of a sma-ll or large soft tumor filledwith serum. This serum is a clear, yellowish liquid similar to cerebro-spinalfluid. We are indebted to Humphrey^ for an accurate description of thislesion. He says: Spina l^ifida is due to an early failure in development,in most cases before the cord is segmented from the epiblastic layer fromwhich it is developed. Hence, it remains adherent to the epiblastic cov-erino-, and the structures which should be formed between the cord and the. Fig. 256.—Case of Spina Bifida. SiX)ntaneoiis cure. Male cliild, 6years old. Now suffers with paralysis of both legs. Well nourished. Noevidence of hydrocephalus. (Original.) skin are developed. For this reason we have in the wall of the sac a fusionof the elements of the cord, nerves, meninges, vertebral arches, muscles, andintegument. If the error in development occurs later, the cord and nervesmay be attached to the sac, but not intimately fused with it; in still othercases the cord does not enter the sac at all. The malformations may occurbefore the central canal is closed, or, if closed, it may reopen from theaccumulation of fluid. It is probable that the accumulation of fluid firstoccurs, and that this prevents the nnion of the parts of the vertebralarches. Although the tumor is generally associated with a bifid spine, this isnot necessarily the case. The protrusion may take j^lace through the inter- Lancet, ]\[areh 28, 1885. IIEREDITArvY
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