Uterine perforation is a serious complication. It occurs in roughly 1/1000 cases. There are not many risk factors documented, but lactating and having had a baby within 6 months prior to placement are risk factors. The degree of malpositioning of an intrauterine device can range from embedment in the myometrium to complete perforation1.
Malpositioning of the IUD can be assessed by ultrasound, but CT can be used to exclude other causes, to evaluate the precise location and to assess possible complications that have occurred.