Question

The ability of a malignant cell to detach itself from a tumor and establish a new tumor and another site within the host :

• A. Etiologic
• B. Anaplasia
• C. Hyperplasia
• D. Metastasis

Hint:

Remember the "M" in Malignant often leads to the "M" in Metastasis. Benign tumors are strictly encapsulated and do not metastasize, which is a key distinguishing factor in clinical pathology.

Answer 1

The Correct Option is D

Step 1: Concept:
This question tests the knowledge of fundamental cancer biology, specifically the terminology used for the spread of malignant tumors from a primary site to a secondary site within the human body.

Step 2: Step-by-step Explanation:

• Etiology refers to the root cause or origin of a disease, such as a genetic mutation, environmental toxin, or a viral infection. It does not describe the physical spread of tumor cells.

• Anaplasia is a condition where cells lose their morphological characteristics and mature differentiation. While it is a major hallmark of aggressive cancer cells, it refers to cellular appearance, not the act of spreading.

• Hyperplasia is an abnormal physiological increase in the number of cells in an organ or tissue. It is a form of cellular adaptation or early pre-neoplastic growth, but it remains localized.

• Metastasis is the complex, multi-step physiological process by which malignant cancer cells break their adhesive bonds, detach from the primary tumor, intravasate into the bloodstream or lymphatic system, travel, and extravasate to establish new, secondary tumors in distant organs.

• This ability to metastasize is the primary characteristic that distinguishes malignant tumors from benign tumors.

Step 3: Final Answer:
The correct terminology for this spreading process is Metastasis.