Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , with perihilar bronchovascular crowding . No overt CHF . There is a small focal opacity in the lower lobe posteriorly , probably on the right -- ? atelectasis or a small amount of pleural fluid , but an early pneumonic infiltrate in this area can not be excluded . There is no pneumothorax .
    OUTPUT:
    
1 . No definite evidence of acute cardiopulmonary process . 2 . Mild blunting of posterior costophrenic angle -- early pneumonic infiltrate in this area can not be excluded . This should be followed to resolution .