Bladder calculus resulting from the migration of an intrauterine contraceptive device

Perforation of the uterus by intrauterine device (IUD) is not uncommon, intravesical migration and the formation of secondary stones is a very rare complication. The IUD migrated from the uterus to the bladder and led to the formation of stones. The mean age was 42.6 years (33-59). Lower urinary tract symptoms were the main complaint in almost all cases. The interval between the insertion of an IUD and the onset of symptoms ranges from 2 to 12 years. Cystoscopy showed partial intravesical position of the IUD in 59 cases. All patients underwent endoscopic stone lithotripsy with removal of the intrauterine contraceptive. The procedures went well, without complications.