This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
Normal PCWP with pulmonary edema is seen in? 
Select and explain. 
A. Left atrial myxoma, B. High altitude, C. Mitral stenosis, D. LV systolic dysfunction
B: High altitude
Answer: B: High altitude 
Explanation: In Lv dysfunction and MS there will increase in pcwp with pulmonary edema . Normal pcwp withpulmonary edema is seen in Non cardiogenic pulmonary edema like ARDS,HIGH ALTITIDE ,Rapid evacuation of pneumothorax /hemothorax.