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. 2022 Jun 30;13:923804. doi: 10.3389/fendo.2022.923804

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Copyright © 2022 Huang, Lien, Wang, Wang, Hwang, Shih, Wu, Dionigi, Huang and Chiang

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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A case of type 1 complete LOS. (A) The R_2p signal was lost, and a small artery (white arrow) was found to be intertwined with the RLN at the region of Berry’s ligament. (B) After dissecting the intertwined vessel from the RLN, R_2d signal showed 1999 µV and R_2p signal showed complete LOS, a disrupted point of nerve conduction (white arrow) was detected. This was a type 1 LOS and the patient had temporary vocal cord palsy.