Download Stage 4 Symptoms Lung Cancer PNG. In stage 4, the cancer has spread (metastasized) to both lungs, the area lung and bronchus cancer is the second most commonly diagnosed cancer, behind breast cancer. Stage 4 lung cancer is incurable.

Lung cancer symptoms closely resemble those of bronchitis or pneumonia.

Patients at high risk for lung cancer, especially those with a history of smoking, should undergo regular screenings in order to catch the disease at its early stages, when there is a better chance of cure. In stage 4, the cancer has spread to both lungs, to the fluid in the area. Once lung cancer has spread beyond the lungs, it's generally not curable. Lung cancer is one of the most common and serious types of cancer.