A swollen up or puffed face is a potential indicator of lung cancer. Usually in this case, the area around the eyes swells up.
Most people tend to ignore this sign as a puffed face is associated with many common health issues like cold or lack of sleep. With time, people get used to it, until it becomes difficult to ignore.
Face swells up in lung cancer as the lung tumors block the flow of blood in the superior vena cava blood vessel.
This is considered to be the first sign of lung cancer and is mostly seen when the person is lying down.
Puffiness is often associated with redness on the face.