MICROANATOMY

Detailed explanation-1: -A benign tumor can become quite large, but it will not invade nearby tissue or spread to other parts of your body.

Detailed explanation-2: -Cancerous tumors spread into, or invade, nearby tissues and can travel to distant places in the body to form new tumors (a process called metastasis). Cancerous tumors may also be called malignant tumors. Many cancers form solid tumors, but cancers of the blood, such as leukemias, generally do not.

Detailed explanation-3: -Cancer cells may actually affect the behavior of the normal cells, molecules and blood vessels near a tumor. For example, cancer cells may recruit normal cells to develop new blood vessels. These vessels keep the tumor alive-and give it a chance to grow-by providing it with oxygen and nutrients.