CTICasesDilated coronary sinus associated with pulmonary hypertension
Imaging findings
Chest CT in a patient with severe pulmonary hypertension and right heart hypertrophy/dilation shows a bulbous, dilated coronary sinus communicating with the right atrium, in the absence of an unroofed coronary sinus or persistent left superior vena cava.
Key takeaways
A dilated coronary sinus can be an incidental finding in patients with severe pulmonary hypertension. The elevated right atrial pressure is transmitted retrograde, causing dilation of the low-pressure coronary sinus.
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