The authors report five cases of fibrous polyps of the urinary tract, which is a rare disease, as Mazeman only reported 12 cases in his review in 1972. These cases confirm the polymorphic nature of the clinical presentation and the site of these tumours of mesodermal origin, essentially composed of richly vascular connective tissue covered with surface epithelium. Treatment is surgical and conservative. The authors performed two junctional resections, one ureterotomy, one ureteroscopic resection and one nephro-ureterectomy for a partially destroyed kidney.