Definitions [6]
Definition: Drug abuse
Drug abuse is the improper or excessive use of drugs that leads to harmful effects on physical, mental and social health.
Definition: Malignant tumour
Malignant tumour is a cancerous tumour that grows rapidly, invades surrounding tissues and spreads to distant organs.
Definition: Benign tumour
Benign tumour is a non-cancerous tumour that remains confined to its original site and does not spread to other parts of the body.
Definition: Tumour
Tumour is a mass of abnormally proliferating cells formed due to uncontrolled cell division.
Definition: Metastasis
Metastasis is the process by which cancer cells spread from the primary site to distant organs through blood or lymph.
Definition: Cancer
Cancer is a disease characterised by uncontrolled and abnormal division of body cells due to loss of normal growth regulation.
