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

Filizoglu, Nuh; Ozguven, Salih; Ones, Tunc; Turoglu, Halil Turgut; Erdil, Tanju Yusuf · Clin Nucl Med · 2022

case_report · Level V

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Abstract

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 18 F-FDG uptake along the SVC in SVC syndrome were reported before, 18 F-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 18 F-FDG PET/CT.

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