Ureteric polyp is a benign lesion, and an uncommon cause of hydronephrosis in children. It is associated with intermittent lumbar pain and haematuria. The diagnosis is usually based on intravenous urography or retrograde urography. Treatment must be conservative and consists of simple resection of the polyp, associated with varying degrees of ureteric resection depending on the size of the lesion. No case of recurrence after treatment has been reported to date. The authors report a case in a 7-year-old boy and present a review of the literature.