There are a number of factors which play a role in the development of cancers. Researchers have been able to identify certain chemicals which upon repeated exposure may bring about cellular damage leading to cancers. The mechanism of how this occurs is still being investigated. What is known is that a number of chemicals such as those found in Tobacco smoke, inherited genes and some inherited physiological traits contribute to the development of cancers. A number of factors are discussed below.
Early detection is crucial for successful treatment of cancers.
The difference in survival for diagnosis at a localized stage vs. regional and distant metastasis can be dramatic for certain cancers. For cases where metastasis has occurred, a number of options are available. Chemotherapy is the use of drugs to kill the tumor cells by inhibiting their ability to replicate. This involves disrupting production of essential enzymes, inhibiting DNA, RNA and protein synthesis, and preventing cell mitosis. Immunotherapy involves strengthening the patients natural immune response against the tumor so that it can more effectively combat the cancer.