A woman's contraceptive implant ended up in her lung; doctors believe the device migrated because it wasn't inserted in her upper arm properly.
A CT scan showing where the implant migrated in the woman's lower left lung, pointed out by the blue arrow. In an extremely rare case, a woman's contraceptive implant migrated from her upper arm to her left lung. The woman, who's based in the U.K. and in her 30s, consulted doctors after noticing that she couldn't feel the implant underneath the skin of her left arm where it had been inserted six years prior. (These implants typically work for three years before needing to be swapped out.) After discussing the patients' medical history with her and conducting a series of imaging tests, doctors discovered that she couldn't feel the implant because her original procedure wasn't performed correctly. As such, the implant became dislodged around a week after its insertion and then moved from the tissue beneath the skin into a vein in the woman's upper arm. From there, it made its way to her heart , before being carried via an artery to her lower left lung — where it was eventually revealed in medical scans. The doctors described the case in a report published Jan. 30 in the journal BMJ Case Reports . Related: A woman would faint whenever she tried to stand. New implant lets her walk. Contraceptive implants are among the most effective types of reversible contraception . Users have a 0.05% chance of unplanned pregnancy during the first year of having the implant, if it's implanted correctly.…