The Malignant tumors are dreadful because their growth is not restricted to one place; their metastasis nature helps their spread from one place to other locations in the body via lymph or blood.
Unlike benign tumor, it is very critical to locate and remove the malignant tumor.
Generally malignant tumors are properly referred to as “Cancers”. The origin of the word cancer is credited to the Greek physician Hippocrates (460-370 B.C.). In Greek, cancer refers to a crab.
It is most likely applied to the disease to mind the shape of a crab, because of finger-like projections spreading from a cancer tissue mass resembles the structure of crab more over the spread of cancer can be in any direction just like the movement of a crab.
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Cancers can affect all animals and people at all ages, even fetuses, but the risk for most varieties increases with age. Generally cancers form a tumor but some cancers, such as leukemia (blood cancer) does not form tumors and they are referred as “Liquid tumors”. These liquid tumors that circulate in the blood may also form masses elsewhere in the body.
Cancer causes about 13% of total deaths. According to the American Cancer Society, 7.6 million people died globally from cancer during 2007.