... of magnetic resonance imaging ofcardiac and paracardiac masses. Am J Cardiol 2003;92:890.Further readingAraoz PA, Mulvagh SL, Tazlaar HD, et al. CT and MR imaging of benign primary cardiacneoplasms ... providesimproved imaging of smaller masses, particularly in the atria, atrial appendages,or associated with valvular structures. Contrast-enhanced echocardiographyimproves visualization of intracardiac masses ... primary sarcomas are fibrosarcomas, osteosarcomas,leiomyosarcomas, and liposarcomas. These are all rare tumors, comprising ap-proximately 4% of primary cardiac masses. The signal intensity characteristicsof...