Surgical emphysema is another term for subcutaneous emphysema. It occurs when air or gas enters the subcutaneous tissue, which is the deepest layer of the skin. People can develop surgical emphysema ...

Stage 4 emphysema is the most severe stage, in which a person’s symptoms may significantly affect their quality of life. Treatment may include medications, oxygen therapy, or surgery. Share on ...

Emphysema is a disease that makes it hard for you to catch your breath. Stage 4 means your emphysema is advanced and that your breathing is very severely affected. At this stage, smoking or other ...