Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with crowding of vasculature and mild vascular congestion . Left lower lobe atelectasis is present with elevation of left hemidiaphragm . Chronic blunting of the right costophrenic angle is noted . No left pleural effusion . No pneumothorax . Heart size , mediastinal contour , and hila are unremarkable .
    OUTPUT:
    
1 . Mild vascular congestion . 2 . Chronic small right pleural effusion versus pleural thickening . 2 . Left lower lobe atelectasis with elevation of left hemidiaphragm .