Does diagnostic delay lead invariably to damage in episodic pelvi-ureteric junction obstruction?

Abstract Objective To determine the relationship between the length of history and renal function in patients with symptomatic pelvi-ureteric junction (PUJ) obstruction in childhood. Patients and methods The study included 41 children with symptomatic PUJ obstruction. The duration and details of their symptoms were recorded and the differential renal function estimated by isotopic renography. Results The median (range) duration of symptoms was 24 (0.25–84) months; there was no statistically significant relationship between the duration of symptoms and differential function at presentation ( P  = 0.148). Conclusion There is no correlation between the duration of symptoms and renal function in children with PUJ obstruction. A delay in diagnosis cannot be directly linked to permanent renal compromise.