Due to pain radiating from my kidneys, I was sent for an ultra sound back in January. After the technician sent results, they referred to what they found as a nodule . I was sent to the imaging center the next day to get a CT scan complete with dye through and IV. In conclusion they found that I have a benign cyst & that I was to drink plenty of water.... My question is: Should I be concerned that it is something more? I have severe pain radiating from my left side (I know for a fact it is not muscular) that is worse at night/ upon awakening. Sometimes it is dull/throbbing and others sharp and painful. I have also been having horrible headaches in the morning, which started about 2 weeks ago. My Grandmother died of Pancreatic cancer in her early 50s.