Metastasis occurs in case of

Options

A. grown gall tumour
B. benign tumour
C. malignant tumour
D. All of above

Answer

**Step-by-Step Solution:**

1. **Understanding Metastasis**: Metastasis refers to the process by which cancer cells spread from the original (primary) tumor to other parts of the body. This is a critical characteristic of cancer that distinguishes malignant tumors from benign ones.

2. **Characteristics of Cancer**: Cancer is characterized by uncontrolled cell division. When these cancer cells begin to move from their original location to other areas in the body, they can form new tumors. This movement is what we refer to as metastasis.

3. **Types of Tumors**: There are two main types of tumors: benign and malignant. Benign tumors do not spread to other parts of the body, while malignant tumors do. The ability to metastasize is a defining feature of malignant tumors.

4. **Conclusion**: Therefore, metastasis occurs in the case of malignant cancer. This is the most feared property of cancer because it signifies a more advanced and dangerous stage of the disease.

5. **Final Answer**: Metastasis occurs in the case of malignant cancer.

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