CTICasesHemi-Azygos Continuation of IVC with Left SVC and Mediastinal Cyst
Imaging findings
Hemi-azygos continuation of the inferior vena cava (IVC) on the left side, draining into a left-sided superior vena cava (SVC), which subsequently drains into the coronary sinus, is identified. There is an absence of a right-sided IVC. A mediastinal cyst, likely a foregut duplication cyst, is also present.
Key takeaways
Hemi-azygos continuation of the IVC, especially when associated with a left SVC draining into the coronary sinus, is a rare congenital anomaly. This can result in symptoms like lower extremity swelling due to altered venous drainage dynamics. Associated mediastinal cysts may also be present.
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