I have had two pelvic surgeries,intestinal bisection, and insertion
and removal of a port-a-catheter in my treatment of cervical
cancer (now in remission). Pain in my shoulder has been
persistent, especially originating from the tiny port incision on
my neck. I have had a good deal of success working with a
physical therapist who does myofascial release of scar tissue. This
involves a deep, slow stretching of the tissues to break the
adhesions and release pressure and pain. Not entirely
comfortable, it is by no means a massage, but the temporary
discomfort is worthwhile over time. It is remarkable how the
fascia in one area (say your abdomen can cause pain in the
shoulder area due to the pulling of the tissues. While this is not a
cure, it has made the pain more manageable. I recommend
discussing this with your doctor if other treatments are not
working.