Therapeutic approach to 36 children with blunt trauma of the kidney is reported. Generally, conservative attitude was applied. In case of type II or type III lesions, according to the Hodges classification, or when a urohematoma does not regress or worsens, we propose endoscopic drainage to avoid complications. Seventy percent of the patients, seen 2 years after the trauma, were free of complications. These patients will be reassessed again, many years after the initial trauma in order to determine the long-term results of this conservative attitude.