The development of the surgery of tumors of the spinal cord and membranes has been due to the advances in our knowledge of the fiber tracts and their pathways and of the localization of functions in the different tracts and segments of the cord. With these advances the names of Bechterew, Cajal, Koelliker, Lenhossek and others, and of Brown Séquard, Sherrington, Thorburn, Mackenzie, Allen Starr and Head are indelibly associated.
Although much is still unknown, it is now possible to diagnosticate the level of a spinal new growth, the side of the cord on which the tumor lies, and the relation of the growth to the cord and to the structures which surround it. Thus, in a large number of cases in our experience, it has been possible to determine before the operation whether the tumor was intramedullary or extramedullary; whether it lay in front or behind, to the left
ELSBERG CA. THE FALSE LOCALIZING SIGNS OF SPINAL CORD TUMOR. Arch NeurPsych. 1921;5(1):64–79. doi:10.1001/archneurpsyc.1921.02180250067006
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