Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Prior right PICC is no longer visualized . Lower lung volumes seen on the current exam . Retrocardiac opacity on the left could be due to a subpulmonic effusion or potentially atelectasis / infection . Linear right basilar opacity suggestive of atelectasis versus scarring . Superiorly , the lungs are clear of consolidation . The cardiomediastinal silhouette is difficult to assess given overlying density at the left lung base .
    OUTPUT:
    
New dense left basilar opacity potentially due to subpulmonic effusion with atelectasis and possible infection . Otherwise unchanged besides interval removal of the right - sided PICC .