cancer

• risk factors of cancer:

  • smoking
  • obesity
  • uv light
  • viral infection
  • inherited genes
• cancer:

  • result of changes in cells
  • lead to uncontrollable growth and division, forming a tumor
  • tumor may not be cancerous
• benign:

  • growth of cells contained in one place, usually within a membrane
  • not cancerous
  • it grows until there is no more room
  • does not invade other tissues
  • if it causes pressure or damage to an organ, it can be dangerous
• malignant:

  • tumor grows and spreads to other tissues
  • cancerous
  • tumor may split up, resulting in cells being carried in the bloodstream or lymphatic system
  • can travel to and stay in another organ, potentially causing secondary tumors
  • cancer cells divide more rapidly and have a longer life span in comparison to normal cells