Case report reveals significant right-to-left shunting in a patient due to anatomical heart anomaly, suggesting careful imaging evaluation is critical.
Pulmonary ventilation/perfusion SPECT imaging showed an unexpected pattern of perfusion tracer uptake in the kidneys and spleen, raising a suspicion of right-to-left shunting. Further imaging studies confirmed hemodynamically significant shunting due to a persistent left superior vena cava that anomalously drained into the left atrium of the heart.
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Maaniitty et al. (2026) studied this question.
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