Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are low in volume but clear of focal abnormality . No pulmonary edema . No pleural effusions . No pneumothorax . Mild to moderate cardiomegaly likely exaggerated by low lung volumes but unchanged compared to ___ . Mediastinal and hilar contours are unremarkable .
    OUTPUT:
    
No pneumonia , pulmonary edema , or pleural effusions . Mild to moderate cardiomegaly unchanged .