| Persistent Left SVC |
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| • | Occurs in
less than 0.5% of people |
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| • | Failure of
regression of L common and Ant. |
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| Cardinal
veins |
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| • | Drains
left jugular and left subclavian v |
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| • | Most
patients also have right-sided SVC |
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| • | Drains
into dilated coronary sinus R |
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| atrium |
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