Understanding cancer is not difficult if we start looking at cancer from the inside. The cancer starts in the cells, and Cells can break off from a malignant tumour and start to grow in another part of the body, this is known as a secondary tumour. Cells in these tumors are abnormal and divide without control or order. They can invade and damage nearby tissues and organs. Cells grow by dividing in half, such that one cell will become two, and two become four (these new cells are called daughter cells), etc . Normally, there are very strict rules as to when a cell can grow or not.
Cells in benign tumors do not spread to other parts of the body. Most important, benign tumors are rarely a threat to life. Cells deprived of oxygen die and decay, which is why some cancers have an odor. The term for this new blood vessel growth is angiogenesis.
Obviously as you may know already, malignant tumors are cancerous. These tumors contain cells that divide and grow without order. Malignant tumors (cancers) can spread to other tissues or organs nearby or to other parts of the body. This is called metastasis . Malignant tumors are tumors that are capable of spreading by invasion...
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