Carcinoma is cancer of

Options

A. Lymphocytes
B. Erythrocytes
C. Ectoderm and endoderm/Epithelial tissue
D. White blood corpuscles

Answer

**Step-by-Step Solution:**

1. **Understanding Carcinoma**: Carcinoma is a type of cancer that originates in epithelial tissue. Epithelial tissue is one of the four main types of tissue in the body, and it covers the surfaces of organs and structures throughout the body.

2. **Identifying the Options**: The question provides several options: lymphocytes, erythrocytes, ectoderm and endoderm, epithelial tissue, and white blood corpuscles. We need to determine which of these is associated with carcinoma.

3. **Analyzing Each Option**:
- **Lymphocytes**: Cancer of lymphocytes is known as lymphoma.
- **Erythrocytes**: Cancer of erythrocytes is referred to as polycythemia.
- **Ectoderm and Endoderm**: These are layers from which various tissues develop, but they do not directly refer to a specific type of cancer.
- **Epithelial Tissue**: This is the correct answer. The cancer that arises from epithelial tissue is called carcinoma.
- **White Blood Corpuscles**: Cancer of white blood cells is known as leukemia.

4. **Conclusion**: Based on the analysis, the correct answer is that carcinoma is cancer of epithelial tissue.

5. **Additional Information**: Carcinomas account for 80-90% of all cancer cases and can be categorized into two main types: adenocarcinoma (which develops in glands or organs) and squamous cell carcinoma (which originates in squamous epithelium).

**Final Answer**: Carcinoma is cancer of epithelial tissue.

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