Name the pathological condition when uncontrolled cell division occurs.

Explanation

**Step-by-Step Solution:**

1. **Understanding Cell Division**: In multicellular organisms, cells undergo division as a part of growth, repair, and maintenance of tissues. Normally, this process is regulated by various mechanisms to ensure that cells divide only when necessary.

2. **Pathological Conditions**: Sometimes, this regulation fails, leading to uncontrolled cell division. This can result in the formation of a mass of cells.

3. **Tumor Formation**: The mass of cells formed due to uncontrolled division is known as a tumor. Tumors can be benign (non-cancerous) or malignant (cancerous).

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