A 46-year-old member asked:
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How many different kinds of cancer are there?

1 doctor answer
Dr. Todd Abbott
24 years experience in Pathology
It depends: That is hard to answer. It depends on exactly how you are defining the word "cancer, " and how much of a difference you require between two "cancers" to say that are different. One answer would be 4: carcinomas, sarcomas, leukemia/lymphomas, and melanomas. Those are malignant neoplasm of epithelium, mesenchymal tissue, hematopoietic tissue and melanocytes respectively. Each can occur all over.
Answered on Jul 3, 2015
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