Chronic Infections
It is quite common for someone who has lung cancer to develop repeated episodes of some chronic infections, such as pneumonia or bronchitis. This is mostly because the cancerous cells in the tumor are located near your airways. They would obstruct these areas and make you more susceptible to bacterial or viral attacks. You might get sick constantly and experience chest pain or tightness. Also, the tumor caused by cancer can weaken your immune system, making it easier for these invaders to spread and cause further complications. [3]
