Re: anyone with scar tissue?
Sometimes scar tissue is visible on MRI post surgery. Often a doctor will diagnose it from a description of the patient's symptoms...and it is usually done after a surgery is performed and the patient is either still in pain or develops pain post surgery...and the nerves appear to all be clear.
The most typical situation is that a person has surgery, such as discectomy and once the surgical pain clears up, is free from "old pain" for a short while. Then maybe a month or more post surgery, the pain returns. It is often similar to the "old pain." At this point, the surgeon often sends the person for an ESI to see if it is just inflamed tissue pressing on the nerve. If this fails, then MRI may be ordered to check for other issues.
Unfortunately, if it is really scar tissue engulfing a nerve, there is not too much effective treatment for it. There is a procedure that is kind of similar to an epidural steroid injection (ESI) that is called "lysis of adhesion" but it has a low success rate and has been known to cause even more problems.
If one tends to "grow" scar tissue in abundance, if the scar tissue is cut out, it just grows back, sometimes even more than the first time....so the person is usually left with pain management as a solution.