Which of the following statements about tumors is incorrect?...

Which of the following statements about tumors is incorrect? a) Benign tumors pose less of a health risk than do malignant tumors. b) Malignant tumors shed cancer cells that can spread to other parts of the body. c) Tumors are caused by excessive cell growth and division. d) Cancer cells from malignant tumors can travel to other parts of the body in a process called metastasis. e) They contain cells with abnormally high contact inhibition.

Which of the following statements about tumors is incorrect?
a) Benign tumors pose less of a health risk than do malignant tumors.
b) Malignant tumors shed cancer cells that can spread to other parts of the body.
c) Tumors are caused by excessive cell growth and division.
d) Cancer cells from malignant tumors can travel to other parts of the body in a process called metastasis.
e) They contain cells with abnormally high contact inhibition.

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Key Concepts

Contact Inhibition

Contact inhibition is a process by which normal cells stop dividing when they come into contact with one another, helping to regulate tissue growth. In many cancer cells, this mechanism is lost or reduced, leading to uncontrolled cell proliferation. The idea of abnormally high contact inhibition in tumors contradicts this behavior.

Metastasis

Metastasis is the process by which cancer cells from a malignant tumor travel through the bloodstream or lymphatic system to form new tumors in other parts of the body. This ability to spread is a key feature that distinguishes malignant tumors from benign ones.

Benign Tumors

Benign tumors are non-cancerous masses that tend to grow slowly, remain localized, and generally do not invade surrounding tissues or metastasize. They usually pose less of a health risk compared to malignant tumors because of their limited ability to cause widespread damage.

Malignant Tumors

Malignant tumors are cancerous growths that have the potential to invade nearby tissues and organs. These tumors are characterized by uncontrolled cell division, which often includes the ability to shed cells that can spread to distant parts of the body.

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