Key result
Anastomosis of the left superior vena cava to the left atrium occurred as a solitary abnormality causing a left-to-right shunt without cyanosis.
Reports a rare case of a patient with a solitary anastomosis of the left superior vena cava to the left atrium who never developed cyanosis.
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Alerts clinicians to acyanotic left-to-right shunts from isolated left SVC-LA anastomosis; leaves open full spectrum of caval variants.
Anastomosis of the left superior vena cava to the left atrium has been reported rarely as a solitary abnormality. The patient reported here had only this abnormality. He was unusual in that he never was cyanotic.
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Blank et al. (1968) studied this question. Anastomosis of the left superior vena cava to the left atrium occurred as a solitary abnormality causing a left-to-right shunt without cyanosis.
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