Benign tumour

A benign tumour remains contained in one area and does not invade surrounding tissues. A malignant tumour is cancerous: its cells can invade nearby tissues and may spread to other parts of the body, where further tumours can form. These distinctions help show why uncontrolled division can become harmful, but the central definition remains that cancer is caused by cell changes leading to uncontrolled cell division.

A benign tumour is non-cancerous. It usually remains contained in one place and does not invade neighbouring tissues, although its size or position can still cause harm by pressing on organs.

A benign tumour is non-cancerous and usually remains contained in one area. A malignant tumour is cancerous: its cells can invade surrounding tissues and may spread to other parts of the body, where secondary tumours can form.