RT Journal Article SR Electronic T1 Syncope and Cardiac Arrhythmias Caused by a Paratracheal Mass JF Ochsner Journal JO Ochsner J FD O. P. Jindal Global University SP 248 OP 250 DO 10.31486/toj.23.0032 VO 23 IS 3 A1 Clayton, Sean D. A1 Eckholdt, Connor A1 Samra, Navdeep A1 Cotelingam, James A1 Dominic, Paari A1 Rao, Vyas R. YR 2023 UL http://www.ochsnerjournal.org/content/23/3/248.abstract AB Background: Syncope is a common complaint in clinical practice. The etiologies and mechanisms can be multiple and complex. Syncope caused by a mediastinal mass compressing the vagus nerve is rare.Case Report: We report the case of a patient who presented to the emergency department experiencing recurrent syncope. Imaging revealed a large, calcified mass in the right paratracheal region. After intracranial lesions, cardiac arrhythmias, and orthostatic hypotension were excluded, we suspected that the syncope was related to vagus nerve compression. The patient underwent surgical resection of a mediastinal mass and had complete resolution of syncopal episodes after surgery.Conclusion: This case outcome suggests that recurrent syncope could be the first symptom of an intrathoracic mass.