Question

Certain tumours are called malignant, because

• A. They are confined to specific locations.
• B. They invade and damage surrounding tissues.
• C. They show contact inhibition.
• D. They are not neoplastic.

Answer 1

The Correct Option is B

Malignant tumors are cancerous and metastasize (spread to other tissues), causing damage.

• (A) Benign tumors are confined to one location.
• (C) Contact inhibition is lost in malignant cells (they grow uncontrollably).
• (D) Malignant tumors are neoplastic (abnormal cell growth).

Answer 2

Malignant tumors are cancerous:

• Metastasize (spread to other organs).
• Destroy nearby tissues.
• Benign tumors (A) are localized and non-invasive.

Tumors are abnormal growths of cells that form masses in the body. They can be classified into two main types:

Benign tumors: These are non-cancerous growths that do not spread to other parts of the body. They typically grow slowly and can often be removed surgically without causing significant harm. Benign tumors usually do not pose a serious health risk, although they can sometimes cause problems if they press on nearby organs or structures.

Malignant tumors: These are cancerous growths that can invade surrounding tissues and spread to other parts of the body through the bloodstream or lymphatic system. Malignant tumors are often more dangerous and require aggressive treatment, including surgery, chemotherapy, or radiation therapy.

Correct Answer: (B) They invade and damage surrounding tissues