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E. Wilson
The Cell In Development And HeredityTransactions of the American Microscopical Society, 44
P. Bailey
A STUDY OF TUMORS ARISING FROM EPENDYMAL CELLSJournal of Nervous and Mental Disease, 11
Abstract That tumors form at one or more levels of the spinal cords of patients suffering with syringomyelia is well known, though histologic studies of them have not often been published. They were considered to be gliomas, although many writers observed that, unlike ordinary gliomas, (a) such tumors do not infiltrate extensively so as to surround and include nerve cells and fibers, preexisting vessels and connective tissue elements; (b) they are part of a definite and peculiar proliferative process, of which they are but a local intensification, and (c) in these tumors associated with syringomyelia the ependyma and the undifferentiated cells lying near the central canal, which are closely related to ependymal cells, share in the proliferative process in a special, possibly a specific, way. Therefore, it will not be surprising if one finds that these tumors are composed of cells of the ependymal, rather than of the neuroglial, derivatives of References 1. Paraplegia, complete subarachnoid block, xanthochromia, and high protein and cell count of the spinal fluid, beginning cystitis and trophic troubles were present. The operation was a venture to forestall the usual unhappy results of that condition. It was performed successfully by Dr. Adrian S. Taylor. The patient improved and when discharged was able to stand. 2. Fixation in Zenker's fluid was started within a few minutes after its removal. Sections were stained by eosin-hematoxylin, Weigert's myelin sheath, phosphotungstic acid-hematoxylin, van Gieson's and Heidenhain's iron-hematoxylin methods and by Holzer's, Achucarro's tannin-silver, and Weigert's glia-fibril stains. 3. Mallory: J. M. Research 8:1, 1902. 4. Bailey, Percival: A Study of Tumors Arising from Ependymal Cells , Arch. Neurol. & Psychiat. 11:1 ( (Jan.) ) 1924 5. Some Further Cases of Ependymoma , abstr., Arch. Neurol. & Psychiat. 13:282 ( (Feb.) ) 1925. 6. After the transmission of this report, Dr. Bailey was kind enough to examine some of the preparations. He writes that he found both centrosomes and the markings described in his report. I have not been able to discover in my preparations any rods or dots other than the centrosomes, which resemble those described by him, but hope to have an opportunity to have Dr. Bailey point them out. 7. Wilson: The Cell in Development and Heredity , New York, 1925, pp. 31 and 699. 8. Flexner: Bull. Johns Hopkins Hosp. , 1891, p. 4. 9. Virchow's Arch. f. path. Anat. 225:199 to 204, 1918.
Archives of Neurology & Psychiatry – American Medical Association
Published: Dec 1, 1928
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