hi Good morning mam, my son is 4.5 year old now.. he was diagnosed with left renal pelvis before delivery which grew from 3mm to 13 mm between 3rd to 9th month prenatal scan, after delivery he used to cry while urinating n was not passing urine properly.. we did circumstance n later it got reduced gradually to 6 mm. now the reports are normal but the siz of obstacle is stil 6.3mm dctrs says it as normal is it ok or i need to consult experts? kindly help