Chronic inflammation has long been suggested to constitute a risk factor for a variety of epithelial cancers such as malignancies of prostate, cervix, esophagus, stomach, liver, colon, pancreas, and bladder. An inflammatory response is typically accompanied by generation of free radicals, stimulation of cytokines, chemokines, growth and angiogenic factors. Free radicals, capable of both directly damaging DNA and affecting the DNA repair machinery, enhance genetic instability of affected cells, thus contributing to the first stage of neoplastic transformation also known as