Cardiac Outpouchings: A Multimodality Imaging Review. 
Cardiac outpouchings pose a diagnostic challenge when encountered in practice, as the signs, symptoms, and initial investigations, such as radiographs and electrocardiogram, are nonspecific.  They may remain asymptomatic and be incidentally detected.  However, a few may present with progressive shortness of breath, thromboembolic complications, arrhythmias, pressure effects, rupture, or even death.  Imaging is of paramount importance in establishing an accurate diagnosis, delineating morphology and extent of the lesion along with its hemodynamic significance, planning management, and in the follow-up.