Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mildly hypoinflated lungs with vascular crowding . No pleural effusion or pneumothorax . No focal opacity . Mild prominence of the heart is due to low lung volumes . Mediastinal contour and hila are unremarkable . Visualized upper abdomen is unremarkable .
    OUTPUT:
    
Mildly hypoinflated lungs . No evidence of pneumonia .