[Place of endovesical "BCG Therapy" in superficial tumors of the bladder].

To better determine the role of endovesical BCG treatment for superficial tumours of the bladder, it is necessary to understand the natural history of these tumours and the prognostic factors; The goal is to better manage BCG as a preventive measure for relapse of superficial tumours of the bladder and to prevent possible progression by infiltration. It is also important to emphasize the possible complications of this therapy and the currently recommended precautions in order to carefully use this very effective method with the least possible morbidity.