What distinguishes a malignant tumor from a benign tumor?

A malignant tumor is characterized by its ability to consist of abnormal cells that can proliferate uncontrollably. This uncontrolled growth is a defining feature that differentiates malignant tumors from benign tumors. Malignant tumors can invade surrounding tissues and often lead to the metastasis of cancer cells to other parts of the body through the bloodstream or lymphatic system. In contrast, benign tumors typically grow slowly, do not invade nearby tissues, and are not known to spread to distant sites. This distinction is crucial in understanding cancer behavior and prognosis, as malignant tumors pose a greater risk to health due to their aggressive nature and tendency to worsen if not treated adequately. The ability of malignant cells to continue dividing without the normal regulatory mechanisms found in healthy cells underscores the severity of malignant tumors.