CTICasesLeft SVC Draining to Left Atrium
Imaging findings
CT shows a left superior vena cava without a bridging vein that drains directly into the left atrium instead of the coronary sinus. The patient also has an inferior sinus venosus ASD.
Key takeaways
This anatomic variant creates a right-to-left shunt, allowing venous blood (and potential emboli or bacteria) to bypass the lungs and enter the systemic circulation, which explains why this patient presented with an intracranial abscess.
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