Hydroureteronephrosis is a medical condition characterized by the swelling of the kidney and ureter due to a build-up of urine. This can be caused by a blockage in the urinary tract, such as a kidney stone or a tumor, leading to a backup of urine in the kidneys. Treatment typically involves addressing the underlying cause of the blockage to restore normal urine flow and prevent further complications.
I don't like the sounds of that...! Do you get it if you do something strenuous? Have shortness of breath, and break out in a sweat with it? If so, this sounds like heart-pain, otherwise known as angina. If you get it only with eating, I'm not really sure what it could be. Nerves that go to the diaphragm (just below the lungs and on top of the stomach) and have branches that go to the shoulder, and irritation of the left diaphragm will cause left shoulder pain, and maybe left neck pain. If you were a member of my family, I'd want you to see your doctor/PA/NP and get checked out...