cancer

• What is the definition of a tumour?

  A tumour is an abnormal mass of cells.
• What causes a tumour to form?

  Uncontrolled growth and division of cells.
• What are the two types of tumours?

  • Benign tumours
  • Malignant tumours
• How do benign tumours differ from malignant tumours?

  Benign tumours stay in one area; malignant tumours spread.
• What characterizes a benign tumour?

  Cells are contained in one area within a membrane.
• Why are benign tumours usually not dangerous?

  Because they stay in one place.
• What is a malignant tumour?

  A tumour that can spread to different body parts.
• What can malignant tumours form in other parts of the body?

  New, secondary tumours.
• Why are secondary tumours more damaging?

  They can cause more damage by spreading.
• What are some risk factors for cancer?

  • Smoking
  • Excessive sunlight exposure
  • Genetic risk
• How does smoking relate to cancer risk?

  It is a known risk factor for cancer.
• What role does excessive sunlight exposure play in cancer risk?

  It increases the risk of developing cancer.
• How does genetic predisposition affect cancer risk?

  It can increase the likelihood of developing cancer.