cancer

• cancer


  the development of a tumour as a result of uncontrolled cell division
• benign tumour

  • a tumour that is contained in one location, usually within a membrane
  • they are NOT cancerous and do not invade other parts of the body
  • can grow very quickly, which may cause damage to another organ
• malignant tumour

  • tumour that can spread around the body via the blood and lymphatic system
  • can invade other tissues
  • cells divide more rapidly and have a longer lifespan
  • disrupts healthy tissues and may lead to death
• factors which lead to cancer

  • genetics - certain genes increase the risk of breast and ovarian cancer
  • smkoking
  • obestity
  • ionising radiation - UV light and x-rays
  • viral infections