[Nephrogenic metaplasia of the ureter]

The authors report a case of nephrogenic metaplasia of the ureter in a 35-year-old patient presenting with left low back pain, haematuria and frequency. Physical examination was not contributive. IVU showed a filling defect in the left iliac ureter. Ureteroscopy demonstrated a tumour nodule in the left iliac ureter. Ureteroscopic biopsy with histological examination showed nephrogenic metaplasia of the ureteric mucosa. Treatment consisted of ureterotomy with resection of the ureteric polyp, followed by closure of the ureterotomy over a double J stent. The course was favourable and postoperative follow-up (IVU, cystoscopy) at 6 months and 12 months was normal.