Lung cancer typically doesn't cause signs and symptoms in its earliest stages. Signs and symptoms of lung cancer typically occur only when the disease is advanced and It’s important to report any unusual physical feelings to your doctor. Often, these unusual feelings can be attributed to other causes, such as bronchitis. But a doctor should check anything that is unusual or worrisome. The signs and symptoms of lung cancer can take years to develop and they may not appear until the disease is advanced. symptoms of lung cancer that are in the chest such Coughing, especially if it persists or becomes intense,Pain in the chest, shoulder, or back unrelated to pain from coughing,Harsh sounds with each breath (stridor)