. A manual of diseases of the nervous system. a consequence ofthe neuritis. The nume-rous other symptoms ofthe disease are indepen-dent of the nerves (exceptperhaps the pigmentationof the skin), and are be-yond the province of thisbook. The neuritis of leprosyis typically adventitial(Fig. 63). The primarysheath and the secondary-sheaths of the fasciculiare greatly increased inthickness, and consist ofnucleated fibrous tissuearranged concentrically (a,b). From the sheath,tracts extend into the in-terior of each fasciculus(b), isolating the groupsof nerve-fibres. The in-crease of tissue even ex-
. A manual of diseases of the nervous system. a consequence ofthe neuritis. The nume-rous other symptoms ofthe disease are indepen-dent of the nerves (exceptperhaps the pigmentationof the skin), and are be-yond the province of thisbook. The neuritis of leprosyis typically adventitial(Fig. 63). The primarysheath and the secondary-sheaths of the fasciculiare greatly increased inthickness, and consist ofnucleated fibrous tissuearranged concentrically (a,b). From the sheath,tracts extend into the in-terior of each fasciculus(b), isolating the groupsof nerve-fibres. The in-crease of tissue even ex-tends between the fibresthemselves (c), and theseundergo slow wasting;many of the fibres in the figxire are seen to be distinctly narrower than normal. The concentricgrowth of fibrous tissue may even invade the whole area of the fasci-culus, all the nerve-fibres perishing before it (d). The characteristicbacillus of leprosy is found abundantly, in recent cases, in the newtissue of the nerves. Peculiar cells are met with, infiltrated with the.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnervoussystemdisease
