Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates mildly hypoinflated lungs with crowding of vasculature and mild left lower lobe atelectasis . No pleural effusion or pneumothorax . The heart is mildly enlarged . Mediastinal contour and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits .
    OUTPUT:
    
1 . Mild left lower lobe atelectasis . No evidence of pneumonia . Please refer to same day CT chest for further details . 2 . Mild cardiomegaly .