Abstract
A 45 year-old asymptomatic man, on a background of good health, who was pointed out “tumorous shadow in the right mediastinum” on a chest mass survey was admitted to our hospital for further evaluation.
A postero-anterior chest roentgenogram revealed a rounded density between trachea and right mainstem bronchus, which seemed to be the enlarged “azygos knob“.
The lateral view showed no shadow of the inferior vena cava.
An electrocardiogram demonstrated a coronary sinus rhythm and bradycardia of 47.
Inferior vena cavography through the great saphenous vein was performed.
The lateral view, showing the typical “candy cane” appearance of the anomalous venous pathway emptying into the superior vena cava via the dilated azygos vein, was diagnosed to be “anomalous inferior vena cava with azygos continuation”.
The hepatic veins entered the right atrium directly.
