Oncology - a branch of medicine dealing with the problems of diagnosis and treatment of malignant neoplasms (tumors). Very often people who are far from medicine to confuse with cancer and cancer. Not all cancers are the cancers.
Cancer - is only one type of malignant tumor that arises from epithelial tissue. Epithelium - is not only the skin. This is a special type of cell that is present in virtually every organ, except only the brain. He lines the chest and abdomen, all the hollow organs (stomach, gall and bladder, uterus, and so on.) Nasal mucosa, larynx, colon, lung, and so on. A characteristic feature of the epithelium is its rapid proliferation. Proliferation - a process of expansion by dividing. He is very well visible on the outer skin: a careful examination of the skin you can see the "flakes" - a keratinized epithelial cells, which gradually peel. If the hand draw a strip of handle, then a few days it will disappear, even if you do not wash their hands, "flakes" of flakes with ink. Mucosal epithelium proliferates more rapidly.
Sarcoma - a malignant tumor, mainly formed in either bone or soft tissue - muscle and brain.
A separate item are malignant blood disease, leukemia and lymphoma. Their treatment and the study is not so much in Oncology, many in the hematology division of medicine. In this case, regenerate hematopoietic progenitor cells (hematopoiesis): Basically, white blood cells, but sometimes there are also pathological erythrocytes and platelets. In some cases, may suppress not just one but a few germs of hematopoiesis.
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