[Chyluria caused by congenital retroperitoneal lymphangiectasis].

A Dutch woman with non-parasitic chyluria is described. Lymphangiography and abdominal CT demonstrated retroperitoneal lymphangiectasis, dilated and tortuous lymphatic ducts around the right pyelocaliceal system and contrast in the bladder. The thoracic duct was patient. There were no metabolic or immunological abnormalities. The aetiology was probably congenital malformation of the lymphatic system. The treatment was conservative.