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In veno-venous extracorporeal membrane oxygenation (V-V ECMO), the dual-lumen catheter (DLC) facilitates mobility, reduces recirculation, and mitigates the risk of infection. The right internal jugular vein (IJV) is the most common site for DLC insertion. Still, it is often unavailable for various reasons, including local infection, hematoma, or thrombus. A 64-year-old male patient with mantle lymphoma, which was in remission after autogenous blood transplantation, suffered lung damage and refractory pneumothorax from coronavirus disease 2019 (COVID-19) and required V-V ECMO treatment initiated on day 39. The patient was unable to be weaned off V-V ECMO due to uncontrolled high serum carbon dioxide (CO 2 ) concentration and required long-term V-V ECMO treatment for more than 80 days. DLC placement was necessary to implement aggressive rehabilitation, reduce puncture site-induced infections, and reduce recirculation. On day 119, a supraclavicular approach was used for DLC placement under fluoroscopic guidance using ultrasound guidance because a thrombus in the right IJV prevented the DLC insertion at a usual puncture site. Rehabilitation was safely performed at a higher intensity than preoperatively of DLC insertion. Overall, the DLC catheter was maintained for more than 30 days until the patient died due to septic shock by an unknown focus on day 150, with no complications such as bleeding or infection. This case report highlights the significance of using the supraclavicular approach for DLC placement in V-V ECMO in cases where IJV is not possible due to thrombus presence. In conclusion, the supraclavicular approach is safe and feasible for V-V ECMO insertion as an alternative to the IJV., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Horikoshi et al.)