Had labs done for kidneys and they are all abnormal had them redone due to numbers being high and they still came back high for creatine and potassium and a couple others. I am diabetic and now the ultrasound said they found some Mild cortical thinning and Small 1.3 cm subcortical cyst in the left upper pole. Sounds pretty serious no??? is this something that can be managed or is this ultimately leading to kidney failure???