The two main types of lung cancer are non small cell lung cancer and small cell lung cancer smoking causes most lung cancers but nonsmokers can also . Colorectal cancer often begins as a growth called a polyp inside the colon or rectum finding and removing polyps can prevent colorectal cancer start here . Information from the national cancer institute about cancer treatment prevention screening genetics causes and how to cope with cancer. Breast cancer treatment depends on several factors and can include combinations of surgery chemotherapy radiation hormone and targeted therapy learn . Pancreatic cancer can form in exocrine cells and neuroendocrine cells the exocrine type is more common and is usually found at an advanced stage
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