Diseases of the nervous system : a text-book of neurology and psychiatry . ly suppurations occur. Bony changes in the veretebrse, with thorax deformities, occur eitheras a consequence of arthropathies, or as muscular atrophies. Thesescolioses occur usually in the upper dorsal, and give rise to compen-satory curvatures. The bony structures of an entire limb may be involved—a hand ora foot—with atrophies of the muscles. Here acromegaly is to be ruledout usually by the deformed, contracted nature of the syringomyelichand or foot, the marked muscular atrophy, and the isolated characterof the limb
Diseases of the nervous system : a text-book of neurology and psychiatry . ly suppurations occur. Bony changes in the veretebrse, with thorax deformities, occur eitheras a consequence of arthropathies, or as muscular atrophies. Thesescolioses occur usually in the upper dorsal, and give rise to compen-satory curvatures. The bony structures of an entire limb may be involved—a hand ora foot—with atrophies of the muscles. Here acromegaly is to be ruledout usually by the deformed, contracted nature of the syringomyelichand or foot, the marked muscular atrophy, and the isolated characterof the limb involved. Syringobulbia may cause a facial hemiatrophyor hemihypertrophy. Reflexes.—Great variability and changeability is present. The skinreflexes vary from complete loss to exaggeration. The Babinski reflexmay or may not be present, as well as the abdominal, epigastric andcremasteric reflexes. The tendon reflexes are often striking in that one reflex in the armfor instance will be lost, the others present, or even exaggerated. The 362 LESIONS OF THE SPINAL CORD. Fig. 188.—Pontine syndrome, with eye palsies of central origin and syringomyelic dis-sociation. There is here a crossed hemianesthesia with alternating paralysis of theVI and VII cranial nerves, anesthesia of the V nerve due to hemorrhage in the lateraland lower portion of the pontine tegmentum of the left side. The right-hand figureshows the hemianesthesia, dissociated as in syringomyelia (hemianalgesia and hemi-thermanesthesia due to lesion of the crossed sensory pathways of the lateral portion ofthe reticular formation. There is preservation of the tactile and postural sensibilitiesand of the stereognostic sense, because of the incomplete extension of the lesion to themedian lemniscus (Rm). The left-hand figure shows (1) atrophic paralysis of the VIInerve with reaction of degeneration, lagophthalmia, drooping of the lips, loss of facialmimicry, paralysis of the entire left facial (VII) indicated (Fig. a);
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