My 4 month old son, born prematured (29 weeks) has been diagnised with PUJ obstruction in left
kidney. Doctors we met have suggested a surgery and some others have asked to wait. USG Scan done in Dec '18 shows moderate hydronephrosis with dilated extra renal pelvis with craniocaudal dimension measuring 38 mm & AP diameter 25 mm &PT 4.2 mm. Scan done on 16th Jan shows AP diameter 5.1 cm with cortical thickness 9.8 mm.
Is surgery necesaary ? If yes, what is the success rate of such surgery and the cost involved?