Migration of an intrauterine contraceptive device into the bladder complicated by stone formation an exceptional complication: case report and literature review.

This case is reported to highlight and to reiterate the need to think about one of the rare complication of IUD insertion, which every practitioner must know, it's the transuterovesical migration, before concluding wrongly to its expulsion. It's a consequence of, non-compliance with the rules for inserting an IUD and poor monitoring. The evolution towards calcification is a certain consequence; its screening involves rigorous clinical monitoring.