Stage IV non-small cell lung cancer. Drawing shows other parts of the body where lung cancer may  spread, including the other lung, the brain, lymph nodes, adrenal gland, kidney, liver, and bone. Inset shows cancer spreading through the blood and lymph nodes to other parts of the body.
Stage IV non-small cell lung cancer. The cancer has spread to the other lung, and/or to lymph nodes, fluid around the lungs or heart, and/or other places in the body, such as the brain, liver, adrenal glands, kidneys, or bones.