Letter to editor–Diagnostic value of post-furosemide ultrasonography in children with pelvicalyceal dilatation (renal pelvis APD 10–20 mm): a predictor of pyeloplasty indication and comparison with diuretic renal scintigraphy

This letter is a response to the study by Masoud et al. on post furosemide ultrasonography predicting the need for pyeloplasty in children with prenatally detected pelvi ureteric junction like hydronephrosis. While commending the efforts of the authors to identifya non-invasive alternative to diuretic renography, we raise few methodological concerns which may affect the interpretation of the results. We also propose a simpler, injection free alternative based on comparison of anteroposterior diameter in supine and prone position and present a methodology which classifies drainage of the pelvicalyceal system as good, partial or poor based on ultrasonography findings and which guides further management.