Asymptomatic Giant Left Atrial Appendage Cavernous Haemangiona Misdiagnosed as a Mediastinal Mass

Abstract

A 50-year-old female was admitted because a chest computed tomography (CT) incidentally noted a mediastinal mass. Physical examination revealed a regular heart rate of 84 beats/minute and blood pressure of 124/88 mmHg. Moreover, no cardiac murmurs were auscultated. Preoperative contrast-enhanced chest CT demonstrated an 8.2 cm × 6.0 cm non-enhancing mass in the left anterior mediastinum (Figure 1A). No abnormalities were illustrated in the 3D heart vasculature reconstruction (Figure 1B) and echocardiogram (Figure 1C).