What is the characteristic of a malignant tumor?

A malignant tumor is characterized by its ability to spread to distant areas of the body, a process known as metastasis. This spreading behavior distinguishes malignant tumors from benign tumors, which typically do not invade surrounding tissues or spread to other parts. Malignant tumors can infiltrate nearby tissues and, through the bloodstream or lymphatic system, establish secondary tumors in areas far away from the original site. This aggressive nature of malignant tumors is a key reason why they often pose a significant threat to health and require comprehensive treatment strategies.

The other characteristics associated with malignant tumors, such as being invasive, difficult to remove, and often not remaining localized, further highlight their dangerous potential in contrast to benign tumors. Understanding this feature is crucial for identifying, diagnosing, and managing cancerous growths effectively.