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2015-11-18T06:16:12+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
When cancer cells from other parts of your body cause a tumor in your brain, it is called a “secondary” or “metastatic brain tumor.” Secondary brain tumors are three times more common than primary brain tumors. All secondary brain tumors are malignant.
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2015-11-18T13:39:59+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
a brain tumour is a collection of abnormal cells in the brain.
they can be cancerous or non-cancerous.
primary tumours orginate in the brain.
secondary tumours are those which result from cancer.
but doctors are not clear about the causes of brain tumour.
hope it helps u.....

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