Paroxysmal Supraventricular Tachycardia Induced by a Mediastinal Mass in Elderly Patients

Objective: To summarize the clinical features of paroxysmal supra ventricular tachycardia (PSVT) caused by the formation of a mediastinal mass (MM) to investigate possible mechanisms and to deepen the understanding of the inherent relationship between MM formation and PSVT. Methods: The clinical features of three patients with frequent PSVT episodes after the appearance of MM were summarized and analyzed. Results: None of the three cases had a history of apparent heart disease or PSVT, and all experienced recurrent PSVT after the appearance of MM, which became more frequent with the progression of MM. Conclusions: These findings suggest a causal correlation between PSVT and MM, which should be considered when diagnosing such cases.