Question: How big can a cancer cell grow in the brain ???

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  1. a cancer cell is not very big, less than 20 micrometres in diameter (0.02 mm) It is not that the cells themselves grow big in size to cause a tumour, but rather that the cells can divide into 2 cells, then those into 4 then 8, 16,32 and so on. normal cells have ways of knowing when dividing any more would make them grow outside of where they need to be and so they stop. cancer cells dont have this, and so keep dividing and dividing and the mass gets bigger and bigger. Depending on where in the brain the cancer cells are dividing, these tumours can get quite large. Generally you would develop serious symptons before they get bigger than a cm or two, but the biggest brain tumour i know of was one in India where the woman had one as big as a small soccerball in her brain!

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  2. Abnormal growth of brain cells cause the formation of brain tumours. Brain tumours -depending on various factors- can grow and become really large.
    The world’s largest brain tumour was found in a patient in India, who had a brain tumour that covered pretty much all over her brain. Her brain tumour had the size of a large ball which was successfully removed after 6 hours of operation. The doctors recorded the size of the tumour as 16cm x 10cm x 8cm.

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