Electron beam therapy is a kind of radiation therapy to treat

Options

A. Enlarged prostrate gland
B. Gall bladder stones by breaking them
C. Certain types of cancer
D. Kidney stones.

Explanation

### Step-by-Step Solution:

1. **Understanding Electron Beam Therapy**:
- Electron beam therapy is a type of radiation therapy specifically used to treat certain types of cancers. It utilizes high-energy electrons to target cancer cells.

2. **Identifying the Types of Cancer Treated**:
- The primary cancers treated by electron beam therapy include basal cell carcinoma and squamous cell carcinoma, both of which are types of skin cancer.

3. **Evaluating Other Options**:
- The question may present other conditions such as enlarged prostate, gallbladder stones, or kidney stones. These conditions are not typically treated with electron beam therapy.

4. **Mechanism of Action**:
- Electron beam therapy works by damaging the DNA of cancer cells, which have a limited ability to repair themselves. This leads to the death of the cancer cells.

5. **Benefits of Electron Beam Therapy**:
- High cure rates (90-98%), quick treatment sessions (less than 5 minutes), minimal discomfort, and limited side effects primarily localized to the treatment area.

6. **Conclusion**:
- Based on the information, the correct answer to the question is that electron beam therapy is used to treat basal cell carcinoma and squamous cell carcinoma.

### Final Answer:
- **Electron beam therapy is a kind of radiation therapy used to treat basal cell carcinoma and squamous cell carcinoma.**

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