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Superior vena caval duplication

Dr Henry Knipe and Assoc Prof Frank Gaillard et al.

Superior vena caval (SVC) duplication is the most common form of a left-sided SVC, where the normal right-sided SVC remains. The right SVC, however, can be smaller in approximately two-thirds of such cases 3.


Results from failure of the embryonic left anterior cardiac vein to regress. Drainage is variable and can be to:

Anatomy: Thoracic

Anatomy: Thoracic

Article information

rID: 2009
System: Vascular, Chest
Section: Anatomy
Tag: variant
Synonyms or Alternate Spellings:
  • Double SVC
  • Duplicated SVC
  • Duplication of SVC
  • Duplicated superior vena cava
  • SVC duplication
  • Duplication of superior vena cava

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Cases and figures

  • Figure 1
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  • Case 1
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  • Case 2: with left IVC
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  • Case 3: with right aortic arch
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  • Case 4
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  • Case 5
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  • Case 6
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