Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hypoinflated with left lower lobe atelectasis . Mild pulmonary edema is noted with cephalization . No pleural effusion or pneumothorax . There is persistent moderate cardiomegaly which is likely accentuated due to patient positioning . Mediastinal contour and hila are unremarkable . A mitral valve prosthesis is again noted . Median sternotomy wires are intact .
    OUTPUT:
    
1 . Hypoinflated lungs with left lower lobe atelectasis . 2 . Mild pulmonary edema . 3 . Persistent moderate cardiomegaly is likely accentuated due to patient positioning .