When a malignant tumour spreads to sites distant from the primary tumour,the process is known as

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Metastasis is the process of malignant tumour cells spreading to sites distant from the primary tumour, leading to the formation of secondary tumours in other parts of the body. Hyperplasia refers to an increase in the number of cells in a tissue or organ, which can be physiological or pathological. Malignancy refers to the presence of cancerous cells that can invade surrounding tissues and spread to other parts of the body, but it doesn't specifically describe the process of metastasis. Dysplasia refers to abnormal changes in the size, shape, and organization of cells, which can be a precursor to cancer but does not involve the spread of tumour cells to other sites.

When a Malignant Tumour Spreads to Sites Distant from the Primary