Q: Majority of cardiac tumors are myxomas. From which chamber they tend to arise most?

A) Left Atrium
B) Right Atrium
C) Left Ventricle
D) Right Ventricle
E) Left Atrial appendage


Answer: A 

Fortunately three fourth of cardiac tumors are benign, and require removal to avoid risk of embolization and obstructive heart failure. Majority of these are myxomas. 80 percent of myxomas arise in the left atrium and rest in the right atrium. 



Reference: 

 Keeling IM, Oberwalder P, Anelli-Monti M, et al. Cardiac myxomas: 24 years of experience in 49 patients. Eur J Cardiothorac Surg 2002; 22:971.