Right atrial myxoma - superior vena cava obstruction
Dysponea, cough, chest pain and cyanosis.
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An intra-cardiac mass is low attenuating in the right atrium, obstructs the superior vena cava. An eccentrically positioned partial filling defect material and forms acute angles with the arterial wall in keeping with an acute pulmonary embolus. Pulmonary infarction and bilateral pleural effusions noted.
Cardiac myxomas are the most common primary cardiac tumor in adults. Although commonly found in the left atrium, they may also be found in the right atrium. Obstruction of the valvular flow and embolic event are known complication.
- Conrad Wittram, Michael M. Maher, Albert J. Yoo, Mannudeep K. Kalra, Jo-Anne O. Shepard, Theresa C. McLoud. CT Angiography of Pulmonary Embolism: Diagnostic Criteria and Causes of Misdiagnosis1. (2004) RadioGraphics. 24 (5): 1219-38. doi:10.1148/rg.245045008 - Pubmed