Cancerous Tumors Lesson 102
About half of all cancer deceases are caused by malignancies that instigated in lung, breast, or colon. On the other hand in all there are in excess of 100 divergent types of cancer, each having a exclusive set of symptoms and requiring a specific kind of therapy. It is likely to divide these specific varieties of cancer into three extensive groups of the basis of histogenesis that is by identifying the particular tissue (hist/o) from which the tumor cells arise (-genesis). These major groups are called carcinomas, sarcomas, and mixed tissue tumors. Carcinomas: They are the major group are solid tumors that are resulting from epithelial tissue that lines external and internal body surfaces, including skin, glands, and digestive, urinary, and reproductive organs. Something like 90 percent of all malignant neoplasms are carcinomas. Benign tumors of epithelial source are more often than not designated by adding the suffix -oma to the type of tissue in which the tumor o...