Question

what do you mean by brain tumor?​

Answer 1

Answer:

when the growth of abnormal cell in brain the brain tumor occur

Answer 2

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A brain tumor is a collection, or mass, of abnormal cells in your brain. Your skull, which encloses your brain, is very rigid. Any growth inside such a restricted space can cause problems. Brain tumors can be cancerous (malignant) or noncancerous (benign). ... A primary brain tumor originates in your brain.