What are the methods of cancer detection? Describe the common approaches for treatment of cancer.

Explanation

### Step-by-Step Solution:

**Step 1: Methods of Cancer Detection**
1. **CT Scans**: These are radiological screening methods that provide detailed images of the body's internal structures. They help in identifying tumors and other abnormalities.
2. **Genetic Markers**: Specific genetic markers can indicate the presence of certain types of cancer. Testing for these markers can help in early detection.
3. **Needle Biopsy**: This procedure involves taking a small sample of tissue from a suspicious area to examine it for cancer cells.
4. **MRI (Magnetic Resonance Imaging)**: This imaging technique uses magnetic fields to create detailed images of organs and tissues, helping in the detection of tumors.
5. **Ultrasound**: This method uses sound waves to create images of organs and can be useful in detecting tumors in certain areas of the body.
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