What describes malignant tumors?

Malignant tumors are characterized by their aggressive nature and ability to invade surrounding healthy tissues. This invasiveness allows them to spread to nearby areas, which is a critical aspect of their behavior and why they are often more dangerous than benign tumors. Malignant cells can break off from the primary tumor and travel through the bloodstream or lymphatic system, leading to the formation of secondary tumors in different parts of the body. This capability for metastasis is what distinguishes malignant tumors from benign ones, which do not invade nearby tissues or spread beyond their original site. Understanding this behavior is essential in recognizing the severity and potential complications associated with malignant tumors, which often require more intensive treatment and monitoring.