This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Cardiac myxoma most common seen in? 
Select and explain. 
A. Right Atrium, B. Right Ventricle, C. Left Atrium, D. Left Ventricle
C: Left Atrium
Answer: C: Left Atrium 
Explanation: Ans. is 'c' i.e., Left AtriumCardiac myxomaThis is the most common primary tumor of hea.It is more common in females. The most common location is left atrium, with left to right ratio (4:1).The region of fossa ovalis in the atrial septum is the oured site of origin.These are gelatinous structures consisting of myxoma cells (lepidic) cells, endothelial cells, and smooth muscle cells embedded in a stroma rich in glycosaminoglycans (mucopolysaccharide).