case_images: PMC11795237_01
case_images: Frontal projection chest radiograph showing a linear radiodensity (arrow) in the left lower zone.
case_images: bcr-18-1-g001.jpg
case_images: PMC11795237_01_bcr-18-1-g001.jpg
case_images: F1
case_images: From there, a posteroanterior chest X-ray demonstrated a linear radiodensity projected over the left lower zone measuring approximately 3.4 cm in length (figure 1).
case_images: Lateral chest X-ray. No radiodensity is seen in the anterior and posterior soft tissues; however, there is questionable linear radiodensity (arrow) anteriorly in the lower chest.
case_images: bcr-18-1-g002.jpg
case_images: PMC11795237_01_bcr-18-1-g002.jpg
case_images: F2
case_images: Initially, this linear density was considered to be possibly present within the subcutaneous tissue; therefore, a left lateral chest radiograph was advised to ascertain its position (figure 2).
case_images: Axial CT of the chest, Maximum Intensity Projection(MIP) lung window image, showing linear hyperdensity in the subsegmental branch of the left descending lobar pulmonary artery in the anterobasal segment.
case_images: bcr-18-1-g003.jpg
case_images: PMC11795237_01_bcr-18-1-g003.jpg
case_images: F3
case_images: CT revealed the contraceptive implant located in the subsegmental artery of the anterobasal segment of the left lower lobe (figures3  4).
case_images: Coronal CT of the chest, Maximum Intensity Projection(MIP) lung window image, showing linear hyperdensity (arrow) in the subsegmental branch of the left descending lobar pulmonary artery.
case_images: bcr-18-1-g004.jpg
case_images: PMC11795237_01_bcr-18-1-g004.jpg
case_images: F4
case_images: CT revealed the contraceptive implant located in the subsegmental artery of the anterobasal segment of the left lower lobe (figures3  4).