A 3 Year old Child Presented with Urinary Retention

A 3 year old male was transferred to pediatric emergency room because of acute urinary retention from one day ago. He had no history of similar problem until now. Physical exam revealed only full bladder. BUN and Creatinine were increased. After urinary catheter insertion, the bladder was decompressed. Kidney ultrasound showed bilateral hydroureteronephrosis. Voiding cystourethrogram (VCUG), TC99m DTPA scan and 99mTc dimercaptosuccinic acid DMSA scan was done after improvement of renal function (Fig. 1,2) and urodynamic study was performed for better evaluation of the bladder