Ultrasound therapy for internal scar tissue after gynecomastia surgery 18 months ago? (10-12% BF)

I had gynecomastia surgery about 18 months ago with good results. Unfortunately I developed internal scar tissue that is not specific to underneath the nipple but the entire lower pec. I'm wondering if ultrasound therapy will help with this, considering the tissue is mature and the area might be too big for Kenalog to help, although I have had one set of injections already. Tried massage, and am assuming revision is going to be suggested, but no assurance scarring won't build up again.