Hi I am Mr. Reynaldo A. Martinez, a college instructor teaching Philosophy in one of the local University in Cebu City, Philippines...Early this today (July 6, 2014) I underwent an ultrasound as was required by my doctor because I had this experience of pain at the back below my waist. And the finding according to the Sonographic Report is that I had a MILD HYDRONEPHROSIS, Right side, and normal sonogram of left kidney and urinary bladder. what does this mean...is this good or bad....will i need a medication or an operation?