A tumor is a growing mass of abnormal cells. Give an example from this chapter of a benign tumor that becomes a malignant tumor.

Verified step by step guidance

1. Understand the definitions: A benign tumor is a non-cancerous growth that does not invade nearby tissues or spread to other parts of the body, while a malignant tumor is cancerous and can invade and metastasize.
2. Recall examples from the chapter where a benign tumor can progress to a malignant tumor, such as an adenoma (a benign tumor of glandular tissue) that can develop into an adenocarcinoma (a malignant tumor).
3. Identify the process of tumor progression, which involves genetic mutations and changes in cell behavior that allow the benign tumor cells to become invasive and malignant.
4. Consider specific examples like colon polyps (benign adenomas) that can transform into colorectal cancer (malignant adenocarcinoma) through accumulation of mutations in oncogenes and tumor suppressor genes.
5. Summarize by explaining that benign tumors like adenomas can become malignant tumors like adenocarcinomas through genetic changes that promote uncontrolled growth and invasiveness.

Key Concepts

Benign Tumors

Benign tumors are non-cancerous growths of cells that grow slowly and do not invade nearby tissues or spread to other parts of the body. They are usually encapsulated and less harmful but can sometimes cause problems depending on their size and location.

Malignant Tumors

Malignant tumors are cancerous growths characterized by uncontrolled cell division, invasion of surrounding tissues, and the potential to metastasize to distant organs. They pose serious health risks and require aggressive treatment.

Tumor Progression from Benign to Malignant

Some benign tumors can accumulate genetic mutations over time that enable them to become malignant. This progression involves changes in cell behavior, such as loss of growth control and increased invasiveness, exemplified by adenomas transforming into carcinomas in certain tissues.