The practice of surgery . parasitic tumors may be multiple. Meningeal tumors cause no symptoms until they are large enoughto press upon the spinal nerves and cord, but the symptoms, even then,do not depend so much upon the size of the tumor as upon its locationand density. Continued pressure upon the cord leads eventually tomarked changes in that structure—to edema, softening, degenerationof centrifugal axones below, and centripetal axones above, the pointof compression; and to meningeal hypertrophy. As IMurphy states,however, we must remember that the conductivity of the cord persists,partial
The practice of surgery . parasitic tumors may be multiple. Meningeal tumors cause no symptoms until they are large enoughto press upon the spinal nerves and cord, but the symptoms, even then,do not depend so much upon the size of the tumor as upon its locationand density. Continued pressure upon the cord leads eventually tomarked changes in that structure—to edema, softening, degenerationof centrifugal axones below, and centripetal axones above, the pointof compression; and to meningeal hypertrophy. As IMurphy states,however, we must remember that the conductivity of the cord persists,partially at least, even after long-continued pressure. The symptoms of meningeal tumors are for long, intricate, and mis-leading. The disease is relatively rare, so that physicians are generallyled away into other diagnoses—neuritis, rheumatism, tabes, lead cohc,sacro-iliac disease, and such abdominal diseases even as gall-bladderinfection, gastric ulcer, and appendicitis. And yet, the symptomatology TUMORS OF THE SPINE 687. Fig. 439.—Anterior view of the areas of distribution of the sensorj^ nerves of theskin (shown on the left side of the body), and distribution of sensation according tosegments of the spinal cord (shown on the right side of the body): 1, Ophthalmicnerve; 2, superior maxillary nerve; 3, inferior maxillary ner\e (the points of exitof the supra-orbital, infra-orbital, and mental nerves are shown by the markingsX); 4, points of exit of the anterior intercostal branches of the intercostal nerves;5, points of exit of the lateral branches of the intercostal nerves; 6, intercosto-humeral nerve; and , area of distribution of the great auricular, super-ficial cersical, and supraclavicular branches of the cervical plexus; C, circvmiflexnerve; W, ners-e of Wrisberg; , internal cutaneous area; , musculo-spiral area; , musculocutaneous area; U, ulnar; M, median; R, radial;, genitocrural area (the nerve is seen as distributing its branches to the g
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsurgery, bookyear1910
