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Left sided superior vena cava (SVC) is a rare anatomic variant of the normal anatomy of the heart and the venous system that has clinical implications. The presence of this variant is relevant to central venous catheter placement, cardioverter defibrillator placement, coronary artery bypass grafting, and numerous other medical procedures. In this report, we describe a rare case of left sided SVC, which was diagnosed during central venous catheter insertion. We also discuss the vascular and anesthetic considerations for individuals with this uncommon variant. [ABSTRACT FROM AUTHOR]