I got a letter this morning from Newcastle hospital as my daughter had a MAG3 scan. She's 18 months n when I was preg she had dilated kidneys. Soon after I had her, her kidneys improved. But on her 1 year scan I just got results back and they said - antenatal detection of hydronephrosis persisting postnatal ly previous improvement, now deterioration on ultrasound scan? What the f*k does this meen! Are my little girls kidneys failing ? Rotting ? Please some one help me :(