No imaging to tell if I had scar tissue before the surgery. I had a supraclavicular thoracic outlet decompression including anterior and middle scalenectomy, brachial plexus neurolysis, resection of first rib, and pec minor tenotomy.

Post op imaging at spectrum(grand rapids, mi) showed nothing in brachial plexus. This was done with a 1.5 tesla MRI. I went to Mayo clinic a few months later and they used a MRI 3 tesla which showed scar tissue on the brachial plexus nerve roots, divisions and cords. T2 hyperintensity and signal changes in the brachial plexus to the upper arm and infraspinatus. I stress that if you are looking for scar tissue you need advanced imaging (MRN, 3 Tesla MRI)

My pec/coracoid tunnel is super tight still and I have been through 4 different physical therapists since the surgery without much relief. Pec area, above and below collarbone are tight and hypersensitive from the surgery. Meds have not helped thus far. Active release to the surgical area (supraclavicular/retroclavicular) is the only thing that gives me a a little relief but the tightness/irritation always comes back within 2 weeks. I wish I could do my own release of the scar tissue but I haven't been succuessful so far.

I still have Scapular pain and rhomboid upper thoracic paraspinal issues as well.