Cancer cells do not respond to signals that regulate cell. cancer cells form a mass of cells called

a. cancer cells may break loose and throughout the body. cancer cells form tumors in other tissues by.

When normal cells become cancerous and form a mass of cancer cells they for a tumor. The lump that is consequently formed on the body is called a mass. A benign tumor does not metastasize, while cancerous one spreads to other parts of the body through the blood and lymph vessels.