Cancer originating from different origin are, in general very different diseases oral cavI and pharynx digestive organs cancers of respiratory epithelia system carcinomas reproductive urinary kin melanoma leukemias and lymphomas ste KEYA new cases deaths/year connective tissue, other 200 300 number per year (thousands) Incidence and mortality of different cancers in the United States. Data from American Cancer Society, 2004 Adapted from Molecular Biology of the Ce// 5th edition◼ Cancer originating from different origin are, in general, very different diseases. Incidence and mortality of different cancers in the United States. Data from American Cancer Society , 2004. Adapted from Molecular Biology of the Cell 5th edition