The brain is the most complex organ in the body.1 It is protected by the blood-brainbarrier, which acts like a gatekeeper for the brain.2 Although the blood-brain barrieris effective, it’s not impenetrable.3
Sometimes cancer cells break away from their original tumour to a new area of the body, including the brain.4 With nearly 1 in 3 people with metastatic breast cancer eventually developing brain metastases,5 this video helps to learn more about how this issue.
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