I have gotten similar x-rays, mri of brachioplex, mri of cervical spine, cat
scan of chest, stress test, EKG, Echocardiogram. They havn't found anything except for an enlarged thymus gland. They are keeping an eye on it and i need to get another cat scan in 2 months time to see if it gets larger in size, as of now it is in the normal variance range. They dont' seem to think it could result in the pain i am having though and have classified it as a red herring.