Key result
18F-FDG PET/CT scan revealed unusual diffuse FDG uptake of the bilateral atrial walls in an 84-year-old man experiencing atrioventricular nodal re-entrant tachycardia.
Case Report (n=1)
Supraventricular arrhythmias such as atrioventricular nodal re-entrant tachycardia should be considered in the differential diagnosis of atrial FDG uptake on PET/CT.
Incidental diffuse atrial FDG uptake on PET/CT should prompt arrhythmia evaluation; leaves open its diagnostic specificity in larger cohorts.
An 84-year-old man was referred for the evaluation of a suspected gastrointestinal neoplasia. 18F-FDG PET/CT scan was performed showing, in addition to the physiological myocardial FDG uptake in the left ventricular wall, an unusual diffuse FDG uptake of the bilateral atrial walls. During his visit to the nuclear medicine unit, the patient became unwell, and an ECG was performed, suggestive of an atrioventricular nodal re-entrant tachycardia. Our case highlights the importance of including supraventricular arrhythmia such as atrioventricular nodal re-entrant tachycardia in the differential diagnosis of atrial FDG uptake.
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Yaagoubi et al. (2021) conducted a case report in Atrioventricular nodal re-entrant tachycardia (n=1). 18F-FDG PET/CT was evaluated on Diffuse FDG uptake of the bilateral atrial walls. 18F-FDG PET/CT scan revealed unusual diffuse FDG uptake of the bilateral atrial walls in an 84-year-old man experiencing atrioventricular nodal re-entrant tachycardia.
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