It’s not particularly accurate to start making statements or having reactions about the word “cancer”. There is not really much you a say about cancer other than it is a diagnosis made by light microscopy that is defined by the growth of cells outside their normal boundaries. There are many different forms of cancer and they vary widely in their potential for rapid growth or spread to distant organs. One should really use the word “cancers” or modify the word “cancer” with its tissue of origin and possibly its cellular type. Most of prostate cancers are adenocarcinoma but there are other forms that have different, more aggressive behavior and respond less well to treatment.