An abnormal mass of cells that remains at its original site in the body is called which of the following?

• A. Benign tumor
• B. Malignant tumor
• C. Metastasis
• D. Lymphoma

Answer: (A)

A mass that stays at its original site and does not invade surrounding tissues or spread to distant sites is a benign tumor. Benign tumors are noncancerous, localized, and typically grow slowly, often being encapsulated and not able to metastasize. Malignant tumors invade nearby tissues and can spread (metastasize) to other parts of the body. Metastasis refers to that spread, not to a mass that remains in place. Lymphoma is a specific type of malignant cancer arising from lymphocytes in the lymphatic system. Therefore, the scenario described matches a benign tumor.