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. 2020 Mar 12;11:35. doi: 10.1186/s13244-020-0838-z

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© The Author(s). 2020

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 17 — The normal inferior pulmonary ligament (IPL) on CT. A 48-year-old man with chronic obstructive pulmonary disease. a An axial CT image of the right lung at the lung base shows the right IPL (black arrow). It appears as a beak that extends laterally from the mediastinum (between the IVC and the azygos vein) with the intersublobar septum (black arrowhead). b An axial CT image of the left lung at the lung base shows the left IPL (black arrow). It appears as a beak that extends laterally from the mediastinum (along the esophagus) with the intersublobar septum (black arrowhead)