7-year-old boy was referred for management of a congenital posterior urethral polyp after undergoing an evaluation for acute urinary retention. The child had no antecedent history of hematuria, urinary tract infection, or voiding dysfunction. An ultrasound examination of the kidneys and bladder showed them to be normal. Contrast cystography showed two diverticula with an otherwise smooth bladder wall. The patient was unable to void, and therefore, the urethra was not visualized by cystourethrography. Endoscopy of the urethra demonstrated a large posterior urethral polyp arising by a broad base from the verumontanum with the preponderance of the polyp occluding the vesical neck (Fig. 1). The bladder was smooth walled with the exception of two wide-mouthed diverticula. The ostium of the left diverticulum was on the posterior lateral wall, just cranial to the left ureteral orifice. The right-sided diverticulum was of the Hutch variety. The polyp was managed by a transurethral incision of its base with a narrowtipped electrode, using the cutting mode and cutting across the base of its stalk. The polyp was retrieved from the bladder with a stone basket. The child voided spontaneously and returned home immediately after surgery. A subsequent voiding cystourethrogram showed a normal urethra with the diverticula smaller and emptying with voiding. Posterior urethral polyps are rare, with sporadic reports of small series of cases. 1‐3 Histologically, the polyps are composed of smooth muscle covered by transitional epithelium, as in our patient. 2 Symptoms include hematuria, intermittent obstruction, obstructive voiding complaints, or urinary retention. 2,3 The evaluation consists of renal and bladder ultrasonography, contrast voiding cystourethrography, and endoscopy of the urethra