[Bilateral ureteral amyloidosis manifested by anuria]

Ureteral amyloidosis is an uncommon disease. It usually presents as an ureteral stenosis and resembles ureteral malignancy. The lesion consists of localized amyloidosis, containing lambda light chains, the etiology of which remains unknown. Ureteral calcifications have been suggested to be pathognomonic. When the diagnosis of ureteral amyloidosis is considered preoperatively, a renal-sparing surgery must be planned. We observed a case of bilateral ureteral amyloidosis presenting with anuria; the patient was treated with conservative surgery and colchicine. The renal function improved without recurrence and remained stable after 5 years of follow-up.