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Recurrent Infratentorial Ependymoma

Authors :
Richard E. Nordgren
George Margolis
Nancy J. Reed
Lawrence R. Jenkyn
Richard L. Saunders
David W. Roberts
Source :
Archives of Neurology. 37:397-398
Publication Year :
1980
Publisher :
American Medical Association (AMA), 1980.

Abstract

To the Editor.— The use of Collins' Law 1 instead of five-year survival rates in the assessment of the risk of recurrence of ependymoma has been advocated. 2 The law states that a tumor grows in a patient at a certain rate unique to that patient; thus, after ablation, the tumor will become symptomatic a second time when it reaches a size comparable with that at the time of initial diagnosis. The longest time over which this amount of regrowth can occur is equivalent to the time that would have been available for the first growth of the tumor had it begun at conception (the age of the patient at the time of first diagnosis plus nine months). A symptom-free ratio may also be defined (independent of age) as the ratio of the symptom-free interval to the interval from Left, Ependymoma of patient at age 10 years (hematoxylin-eosin [H-E], x

Details

ISSN :
00039942
Volume :
37
Database :
OpenAIRE
Journal :
Archives of Neurology
Accession number :
edsair.doi...........e39958e3e39e4eb1d8fb210746e588e8
Full Text :
https://doi.org/10.1001/archneur.1980.00500550099026