Document Detail

Experimental analysis of the spinal cord compressed by spinal metastasis.
MedLine Citation:
PMID:  2617360     Owner:  NLM     Status:  MEDLINE    
The purpose of the present study of experimental spinal metastasis, developed in rats by inoculation of tumor cells through the spinous process, was to find the factor that causes the initial damage to the cord in this disorder. In the early stage of paralysis, the degenerated posterior funiculus originated from a small hemorrhagic area in the posterior column of the involved cord. Using the scanning electron microscope, the hemorrhage was found to be from the intrinsic vein, resulting from the disturbance of venous drainage in the compressed portion. In the early stage of compression, extravasation of horseradish peroxidase was observed in the white matter, but histologic degeneration was not. A hemorrhage existed wherever degeneration of the funiculus was observed. Therefore, the trigger to induce the initial damage on the cord in spinal metastasis was not likely to be vasogenic edema, but instead the intrinsic venous hemorrhage.
S Manabe; H Tanaka; Y Higo; P Park; T Ohno; A Tateishi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Spine     Volume:  14     ISSN:  0362-2436     ISO Abbreviation:  Spine     Publication Date:  1989 Dec 
Date Detail:
Created Date:  1990-03-06     Completed Date:  1990-03-06     Revised Date:  2009-07-09    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1308-15     Citation Subset:  IM    
Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.
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MeSH Terms
Capillary Permeability
Microscopy, Electron, Scanning
Models, Anatomic
Neoplasm Transplantation
Nervous System Diseases / etiology
Rats, Inbred Lew
Spinal Cord / blood supply,  pathology,  radiography
Spinal Cord Compression / etiology*
Spinal Neoplasms / complications*,  pathology,  secondary

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