Question

Which of the following is non-epithelial malignancy tumor?

• A. Naevus
• B. Adenoma
• C. Lipoma
• D. Fibrosarcoma

Answer 1

The Correct Option is D

The question asks to identify the non-epithelial malignancy tumor from the given options. To solve this, we need to understand the nature of the tumors listed in the options. Here are key points about each option:

1. Naevus (or Nevus): This refers to a benign, pigmented lesion often associated with moles on the skin. It is not a malignancy and typically arises from melanocytes.
2. Adenoma: This is a benign tumor originating from epithelial tissue and is composed of glandular structures. It is non-malignant.
3. Lipoma: A benign tumor made of fat tissue. Lipomas are composed of mature fat cells and are generally non-malignant.
4. Fibrosarcoma: This is a malignant tumor arising from fibrous connective tissue. It is categorized as a non-epithelial malignancy because it originates from the mesenchymal tissues, not the epithelial tissue.

As we can see from the explanations above, the correct answer is Fibrosarcoma due to its nature as a malignant tumor originating from non-epithelial tissue (connective tissue), differentiating it from the benign nature of the other options.

Conclusion: The non-epithelial malignancy tumor is Fibrosarcoma.