Benign Tumours: Grow slowly, Cells are often specialised, The nucleus has a normal appearance, Stick together and remain as primary tumours in the tissue, Surrounded by a capsule of dense tissue so it remains compact, Malignant Tumours: Grow very quickly, Can become unspecialised , Can be life threatening, Surgery, radiotherapy and chemotherapy to treat, Can spread through the body causing secondary tumours known as metastasis, Not surrounded by capsules so they can grow finger like projections into the surrounding tissues,

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