An 18-year-old woman had an etonogestrel implant inserted into her left upper arm 2 years earlier for menorrhagia. Her symptoms were not well controlled and she requested the implant to be removed. However, clinicians were unable to locate the implant on her left arm. Computed tomography showed that the implant had migrated to a sub-lobar branch of the left lower lobe pulmonary artery. The long-term effect of leaving an etonogestrel implant in the pulmonary arterial system is unknown. This report adds to the small body of evidence on intravascular migration of a subdermally placed contraceptive implant.
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