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Rare disease
Anomalous venous circuit: a detour to the heart
  1. Omair Ali1,
  2. Abdul Wase2
  1. 1Department of Internal Medicine, Wright State University, Dayton, Ohio, USA
  2. 2Department of Cardiology, Wright State University, Dayton, Ohio, USA
  1. Correpondence to Dr Omair Ali, omairy2j{at}


We report a case of a complicated vascular access secondary to systemic venous defects, which have not been previously reported. Evaluation revealed an atypical coursing of a subclavian vein-persistent superior vena caval system into the hemizygos–azygos system and ultimately into the right (proper) superior vena cava. The clinical and surgical considerations of such an anomaly are discussed therein. We look at embryological origins of such a merger and share our experience in troubleshooting through the anomaly.

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