Stage 4 lung cancer, also known as advanced or metastatic lung cancer, is a type of cancer that has spread from the lungs to other organs or distant parts of the body. In this stage, the cancer cells have typically metastasized, or spread, to areas like the liver, bones, brain, or other distant lymph nodes.

Stage 4 lung cancer is considered the most advanced stage of lung cancer and is generally more difficult to treat compared to earlier stages. It is often associated with a poorer prognosis, meaning the outlook for long-term survival is generally less favorable. However, treatment options are available to help manage symptoms, slow the progression of the disease, and potentially improve quality of life. It’s important for individuals diagnosed with stage 4 lung cancer to work closely with their healthcare team to develop a personalized treatment plan that considers various factors such as the location and size of the tumors, overall health, and individual preferences.