Sure, IUDs have been known to go MIA from time to time, but in this “very rare case”, a subcutaneous contraceptive managed to migrate through a woman’s vascular system all the way to her lung.

The 31-year-old was referred for removal of the etonogestrel rod after reporting a three-month history of abnormal uterine bleeding.

However, doctors were unable to locate the implant in her arm.

Then, an ultrasound revealed that the subcutaneous implant was “located in the left mammary groove or the left lateral costal wall”.