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: Medicine
Gradient in pulmonary artery wedge pressure and left venticular end diastolic pressure is seen in 
Select and explain. 
A. Aortic regurgitation, B. Constrictive pericarditis, C. Left atrial myxoma, D. Pulmonary thromboembolism
C: Left atrial myxoma
Answer: C: Left atrial myxoma 
Explanation: None