A 10-year-old boy with chyluria due to a congenital fistulous communication between the lymphatic system and the bladder is described. Chyluria can be parasitic or non-parasitic. Many causes of non-parasitic chyluria have been reported. Lymphography is the preoperative imaging procedure of choice since it demonstrates the site, the calibre and the number of the fistulous communications. Lymphoscintigraphy shows very well the site of the fistula but is not as precise as lymphography. However, it has the advantage to be less invasive and is an excellent alternative in the non-surgical cases. The prognosis of non-parasitic chyluria is usually very good and the treatment is mostly conservative.