Since Pérez-Castro and Martínez-Piñeiro initiated diagnostic and therapeutic ureteroscopy this technique has gained a place in the management of upper urinary tract tumors.Improvement of the equipment (rigid and flexible), better diagnosis and knowledge of outcomes and allows to treat a group of patients with transitional cell carcinoma of the ureter and pelvis by the conservative retrograde technique.In this article, we present an overview of indications and management of the Upper urinary tract tumor by ureteroscopy.