Case report: A rare case of pediatric female bladder neck obstruction

A 3-year-old girl with a chief complaint of lower urinary tract symptoms (LUTS) for 3 years was admitted in our center. Urinary ultrasonography showed left hydronephrosis with ureteral dilatation and left solitary kidney. Voiding cystourethrography indicated left vesicoureteral reflux and trabeculated bladder wall. Urodynamics study revealed the low flow rate and high detrusor pressure. Cystoscopy showed trabeculated bladder wall with elevation of the bladder neck. Then we performed transurethral bladder neck incision tentatively. The patient recovered from LUTS and the upper urinary tract dilation disappeared postoperatively. •Primary bladder neck obstruction is a rare condition in girls. The recognized diagnostic criteria have not yet been established for pediatric females. Surgical intervention of PBNO in girls has not been reported. Our case showed that pediatric female PBNO is rare but exist, it could be relieved by transurethral incision of the bladder neck.