Inverted Papilloma of the Prostatic Urethra Arising in a Juvenile
A 17-year-old man was referred for evaluation of painless, gross hematuria and voiding difficulty. The patient had suffered from voiding symptoms for 2 months. The patient did not have any history of trauma or infection. He had a no family history or personal history of urinary tract diseases. The physical examination was unremarkable. Urinalysis showed greater than 30 erythrocytes, 0 to 2 leukocytes/HPF, and a pH of 6.0. The urine culture was negative. The blood urea nitrogen and creatinine was 15 mg/dl (normal range 8 to 18) and 0.6 mg/dl (normal range 0.5 to 1.5). Cystoscopy revealed a solitary, papillary tumor on the prostatic urethra protruding to the bladder neck (). It was located on the prostatic urethra proximal to the verumontanum. Transrectal sonography demonstrated a 1.4 cm papillary lesion on the medial aspect of the prostatic urethra protruding to the bladder neck (). The inside of the bladder was unremarkable. Bladder washing cytologic specimens were negative for malignancy. Transurethral resection was then performed () and a histological examination showed an inverted papilloma of the prostatic urethra (). At 3 months of follow-up, he was asymptomatic.