@bill5 Don't rush into surgery. You might want to try physical therapy. Surgery will create scar tissue that gets tight and it can make it worse. My experience is in having thoracic outlet syndrome and a cervical spine problem that did have surgical correction. I had a whiplash in a traffic accident years ago. When your body is injured, you start guarding to protect yourself which causes tightness and becomes a pattern. You may want to look at our discussion on myofascial release. My diaphragm gets tight and my physical therapist releases it and that helps me breathe better. It may be that you would need to work at therapy with myofascial release for awhile before you would see results because you will be loosening layers of tight tissue to get to the next layer. You can have tightness that extends through your entire body. I periodically have to release tightness from my surgical scar and then I can move better. Here is a link to our discussion and there is a provider search on the myofascialrelease.com website. https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/ There are also physical therapists who specialize in lung function.