Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One portable AP view of the chest . Subtle right lower lobe opacity may represent atelectasis or early pneumonia . The subdiaphragmatic free air is decreased and a small amount is still present . Left basilar atelectasis . The right PICC line ends in the mid SVC . The cardiac , mediastinal , and hilar contours are normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Subtle opacity in the right lower lobe likely represents atelectasis ; however , may represent pneumonia in the correct clinical setting . 2 . Mild left basilar atelectasis .