Migration of a Contraceptive Subdermal Device Into the Lung.

Subdermal contraceptive implants are usually inserted subdermally and carry the possibility to migrate within a small range, usually less than 2 cm from the insertion sites; significant migration over 2 cm is rare. This paper discusses the case of a 38-year-old female patient with a migrated subdermal Implanon contraceptive implant in the left pulmonary artery. On chest computed tomography, roughly a 4 cm long linear hyperdensity foreign body in the left lower lobe was found and was favored to be a migrated Implanon in a subsegmental pulmonary artery branch.