What Does this MRI Scan Result Mean?

I had an MRI on my shoulder due to intense pain and inability to move without sharp pain and pop sound. MRI results state: Supraspinatus tendinopathy, partial thickness tear vs. tendinitis; Mild subacromial bursitis; tenosynovitis long head of the bicep tendon; moderate sized glenohumeral joint effusion; fluid in the subcoracoid bursa; mild hypertrophic degenerative osteoarthritic changes of the acromioclavicular joint, but does not appear to represent an impingement morphology. What does this mean? The doctor said none of this would cause the pop sound with the extremely sharp pain that accompanies it when I raise my arm or extend it to the side. Doctor was not very informative at all. Just gave me a cordisone shot and said to see him in a month. Thank you.