Helpful information on the diagnosis: emedicine.medscape.com/…
The most pertinent IMO part relates to symptoms:
Common presenting symptoms include the following:
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Slowly progressive neurologic deficit, usually motor weakness
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Headache
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Generalized symptoms of increased intracranial pressure, including headaches, nausea and vomiting, and cognitive impairment
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Seizures
Neurologic symptoms and signs can be either general or focal and reflect the location of the tumor, as follows:
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General symptoms: Headaches, nausea and vomiting, personality changes, and slowing of cognitive function International
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Focal signs: Hemiparesis, sensory loss, visual loss, aphasia, and others.
We saw with our loved ones that there were certainly personality changes and cognitive decline. That is why I feel I should have known there could be something seriously wrong with McCain in this instance.
For others, this provides a good point to get a bit of understanding of this form of cancer, which at least in my experience is always fatal.