Rare cancer which is marker for AIDS is

Options

A. Leukemia
B. Kaposi's carcinoma
C. Retinoblastoma
D. Spuamous cell carcinoma

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a rare cancer that serves as a marker for AIDS. This means we need to identify a type of cancer that is commonly associated with individuals who have AIDS.

2. **Reviewing the Options**: The options provided are:
- Leukemia
- Kaposi's carcinoma
- Retinoblastoma
- Squamous cell carcinoma

3. **Analyzing Each Option**:
- **Leukemia**: This is a cancer of the blood, specifically affecting white blood cells. While it is serious, it is not specifically a marker for AIDS.
- **Kaposi's Carcinoma**: This cancer is characterized by the growth of tumors in the skin and other organs, often presenting as purplish lesions. It is known to occur more frequently in individuals with weakened immune systems, such as those with AIDS.
- **Retinoblastoma**: This is a cancer of the retina, primarily affecting children. It is not associated with AIDS.
- **Squamous Cell Carcinoma**: This is a type of skin cancer resulting from uncontrolled growth of squamous cells. While it can occur in immunocompromised individuals, it is not specifically a marker for AIDS.

4. **Identifying the Correct Answer**: Based on the analysis, Kaposi's carcinoma is the only cancer listed that is recognized as a marker for AIDS due to its association with weakened immune systems.

5. **Conclusion**: Therefore, the rare cancer which is a marker for AIDS is **Kaposi's carcinoma**.

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