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opracowano system klasyfikacji oparty na typie komórki, która wytworzyła nowotwór începe să înveți
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a classification system was developed based on the type of cell that produced the cancer
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większość wszystkich nowotworów to: raki, mięsaki, chłoniqki i białaczki începe să înveți
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the majority of all cancer are: carcinomas, sarcomas, lymphomas, and leukemias
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raki obejmują komórki nabłonkowe (komórki wyściełające ciało) începe să înveți
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cancers involve the epithelial cells (cells linint the body)
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Mięsak jest rakiem tkanek miękkich ciała, tj.np. mięśnie, tłuszcz, nerwy, naczynia krwionośne începe să înveți
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Sarcoma is a cancer of the soft tissues of the body, such as, e.g. muscle, fat, nerves, blood vessels
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Mięsak może również pojawiać wię w kościach, szczególnie w nogach începe să înveți
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Sarcoma can also occure in bones, primarily in the legs
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chłoniaki to nowotwory tkanki limfatycznej: węzły chłonne, szpik kostny, śledziona i grasica începe să înveți
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Lymphomas are cancers of the lymphoid tissue: lymph nodes, bone marrow, spleen, and thymus
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białaczki rozwijają się z białych krwinek i także wpływają na szpik kostny i śledzione începe să înveți
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leukemias develop from white blood cells and also affect the bone marrow and spleen
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dokładna etiologia raka nie jest znana, ale uważa się, że do jego rozowju przyczynia się: dziedziczność, wirusy, czynniki rakotwórcze, środowiskowe i prawdopodobnie stres începe să înveți
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the precise etiology of cancer is unknown, but it is thought that heredity, viruses, carcinogens, environmental factors, and possibly stress contribute to its development
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rak nie jest dziedziczny, ale czasem rodziny mają do niego predyspozycje genetyczne începe să înveți
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cancer is not hereditary, but sometimes families are genetically predisposed to it
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substancje rakotwórcze występujące w środowisku to promieniowanie (np. rentgen, słońce), chemikalia w żywności lub wodzie, chemikalia, które dotykaja skóry i wdychane substancje, np. dym tytoniowy începe să înveți
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environmental carcinogens are radiation (e.g. x-ray, sun), chemicals in food or water, chemicals that touch the skin, and inhaled substances, e.g. tobacco smoke
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