Tumor-promoting inflammation in lung cancer: A literature review.

Tumor-promoting inflammation is an inflammation that occurs because tumor cells cause necrosis of healthy cells which releases cell contents into the environment, triggering the release of proinflammatory mediators. There are intrinsic and outside factors of tumor-promoting inflammation. Intrinsic factors are genetically related, while extrinsic factors are due to mediators and inflammatory cells. The primary inflammatory mediators in the tumorigenesis process include NF-kB, STAT3, HIF-1, and TNF-α. in contrast, the inflammatory cells that play a role are TAM, a collection of tumor-associated leukocytes. Bacteria is also one of the extrinsic factors that can cause tumors because of the chronic inflammation it causes.