migration intrauterine devices
ultrasonography showing an IUD with copper as a hyperechoic (rendered as bright) line at right, 3 centimeters away from the uterus at left. The IUD is surrounded by a hypoechoic (dark) foreign-body granuloma. The urinary bladder is seen beneath it, close the the circular tip of the ultrasound probe at the bottom. The patient was a 29 year old woman who had a painful IUD insertion 2 months earlier.