A client has been diagnosed with a grade 1 astrocytoma, an intra-axial brain tumor. When asked what his "chances of surviving this thing are," the nurse's response is based on the knowledge that:
1. Age is the greatest predictor of client survival.
2. A grade 1 is a very aggressive form of this type of tumor.
3. It depends on whether the tumor metastasizes outside the brain.
4. This type of tumor has a survival rate of 3 years.
Age is the greatest predictor of client survival.
Rationale: The strongest predictor of survival with low-grade (grades 1 and 2) astrocytoma (a type of glioma) is age. One study reported a mean survival time of 8.5 years for adults less than 40 years of age; this contrasts with 4.9 years for adults 40 years of age and older. Astrocytomas (grade III) are noted to be more aggressive than lower-grade astrocytomas, with a median survival rate of approximately 3 to 5 years. Though astrocytomas may spread into surrounding normal brain tissue, it is rare for them to spread outside the brain and CSF system.
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