Hello Doctor, I just need some details about chronic medical renal disease , recently my dad had Ctc scan, in that report it shows, 1. Bilateral prominent pelvic seen 2.urinal bladder is partially distinct 3. Both kidney are small in size, right kidney: 8x3.9 & left kidney: 9.5x4.9 4. Blood urea is 41 Finally in impression thy mentioned, Chronic medical renal disease, no evidence of hydro urirethermo metrocis. They told to my mum there is some block, need to remove that block by operation, can u pls tell me what type of operation it is? (Open surgery or laser treatment)what. Type of treatment need for this?