Question

Cancer is proliferation of cells then why is it fatal?

Answer 1

Cancer isc there proliferation ofa cells,butse increased cell proliferation alone is not enough to cause cancer. A tumor is considered cancerous only if its cells have the ability to invade surrounding tissue, in which case it is said to be malignant. Malignant cells can break loose from the primary tumor, enter the bloodstream or lymphatic vessels, and form secondary tumors at other sites in the body. The more widely the cancer spreads, the harder it becomes to eradicate. This metastasis is what makes cancer so deadly.