A neurinoma originates in the embryonic cells of Schwann, or, as some put it, in the precursors of these cell elements. Antoni1 calls them lemmoblasts. Described mainly in the posterior roots of the spinal cord, neurinomas also occur in: the pharynx and bronchi (Askanazy2); the gastro-intestinal canal (Orzechowski and Nowicki,3 Banerjee and Christeller4); the cerebral nerves, including the optic (Reverdin and Grumbach5) but especially in the acoustic, and even in the central nervous system—the brain (Josephy6) and spinal cord (Kirch7). This type of tumor is not rare, for Antoni found it in twenty of thirty cases of tumors of the spinal cord that he studied, while Sommer8 gave an account of thirty-seven and Erb9 of ten additional cases; to these may be added eight cases studied by Borchardt.10 In all, fifty-five cases of neurinomas have been recorded.
In former years
HASSIN GB. NEURINOMA: A CASE OF INVOLVEMENT OF THE CAUDA EQUINA WITH THE CLINICAL PICTURE OF BILATERAL SCIATICA. Arch NeurPsych. 1928;19(6):1087–1100. doi:10.1001/archneurpsyc.1928.02210120120009
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