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Recurrent Infratentorial Ependymoma
- 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