Antenatal renal pelvic dilatation and foetal outcomes — Review of cases from a tertiary care center in Karachi,Pakistan

Objective: to determine the incidence of antenatal renal pelvic dilatation to evaluate antenatal resolution/ progression and post-natal outcome. methods: this retrospective study was conducted at the aga khan university hospital,karachi,and comprised data of all women found with renal pelvic dilatation in antenatal scans between january 2011 and december 2013. a cutoff of 5mm was used to diagnose renal pelvic dilatation. renal pelvic dilatation was categorised into three groups: mild (5-6mm in second trimester and 5-9mm in third trimester),moderate (7-10mm in second trimester and 10-15 in third) and severe (more than 10mm in second trimester and more than 15mm in third trimester). results: of the 13,337 scans,renal pelvic dilatation was found in 111(0.8%) cases. the overall mean maternal age was 28.5 ± 4.2 years. renal pelvic dilatation was unilateral in 52(46.8%) and bilateral in 59(53.2%) cases. post-natal scan was done in 61(55%) cases at the discretion of the neonatologist. a pathological finding was diagnosed in postnatal scan in 19(17.7 %) cases. pelvi-ureteric junction obstruction was found in 6(5.4%) neonates,all in the severe renal pelvic dilatation category. conclusion: the incidence of renal pelvic dilatation was low and the outcomes were normal in majority of cases. © 2016,pakistan medical association. all rights reserved.