Benign and malignant tumours differ in that:
AMalignant tumours grow more slowly
BBenign tumours are larger than malignant
CThey are identical
DBenign tumours are confined to their original site; malignant tumours invade surrounding tissues and can metastasise
Answer & Solution
Correct answer: D. Benign tumours are confined to their original site; malignant tumours invade surrounding tissues and can metastasise
**Benign tumours**: confined, slow-growing, do not invade or metastasise (e.g., warts, lipoma). **Malignant tumours**: rapidly proliferating, invade surrounding tissue, **metastasise** to distant sites, starve normal cells of nutrients. Only malignant tumours = 'cancer'.
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