For about a year now I have had severe pain to my left side that feels like a spasm. I had an episode last July and was sent by ambulance from my PCP as he was afraid I could be having a heart attack and shortness of breath mainly from the pain. At the Chest Pain Center no labs showed evidence of a heart attack. I was however sent to a Cardiologist and had a nuc med stress test and no evidence of being a heart problem. My gastro md thought it could be a stomach spasm but no meds for that helped that he gave me to insert under my tongue. Now next step I had a MRI to liver as my labs show an increase in a aplha beta protein marker. I do have Hep C but no treatment at this time as I would like to wait for a new med coming up soon with out side affects on pegulated interferon... anyway could a left upper lobe renal cyst cause this recurrent pain i am having in my left side? It is 1.1cm in maximum dimension?