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Anomalous atrium associated with persistent left superior vena cava

Abstract

Persistent left superior vena cava (PLSVC) is the most common venous anomaly with an incidence of 0.3–0.5% in the general population. Here, we report a rare case of PLSVC with anomalous atrium in a cadaver during the student′s dissection session at the University of Tsukuba. In this case, the coronary sinus had merged with the right atrium to form an enlarged sac-like structure and received systemic venous flow including inflow from the PLSVC. The roof of the coronary sinus with the right atrium was thicker than that of the control cases. We further found that the distance between the sinoatrial node and the opening of the coronary sinus was slightly more than half of that in control cases. This variant appears interesting and is worth reporting for developmental and clinical consideration.

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Acknowledgements

We thank Dr. H. Nogami (Japan University of Health Sciences) for his advice and Mr. Y. Seya and Mr. K. Yabe (University of Tsukuba) for their technical support. We also thank the donor and her family for tissue donation and allowing us to publish this case report.

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Correspondence to Tomoyuki Masuda or Yosuke Takei.

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Ethical approval was obtained from the Medical Ethics Committee of the University of Tsukuba (#1137). Informed consent was obtained from all donors and their families.

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Shutoh, F., Masuda, T., Sasaki, T. et al. Anomalous atrium associated with persistent left superior vena cava. Anat Sci Int 96, 572–576 (2021). https://doi.org/10.1007/s12565-021-00604-z

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Keywords

  • Atria
  • Cardiovascular anomaly
  • Coronary sinus
  • Gross anatomy
  • Persistent left superior vena cava