What is the difference between a benign tumor and a malignant tumor?

Question

Quizplus · Accepted Answer

The key difference between a benign tumor and a malignant tumor is that a malignant tumor has the ability to spread to other tissues and initiate tumors at secondary sites, a process called metastasis. Benign tumors do not spread or invade surrounding tissues. Other factors like pain, severity of cancer, or causative agent (virus vs spontaneous growth) are not defining characteristics of benign or malignant tumors.

What Is the Difference Between a Benign Tumor and a Malignant