Azygos Vein Enlargement Secondary to Superior Vena Cava Syndrome on 18F-FDG PET/CT

Obstruction of the blood flow from the superior vena cava (SVC) to the right atrium causes the SVC syndrome. The azygos system is the most important way to overcome SVC obstruction. Azygos vein enlargement can be seen secondary to the SVC syndrome. Although a few cases showing 18F-FDG uptake along the SVC in SVC syndrome were reported before, 18F-FDG PET/CT findings of azygos vein enlargement have not been documented yet. Herein, we presented an intriguing case of azygos vein enlargement secondary to SVC syndrome on 18F-FDG PET/CT.

Source: Clinical Nuclear Medicine - October 17, 2022 Category: Nuclear Medicine Tags: Interesting Images Source Type: research