Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a right PICC line with tip terminating in the mid SVC . Cardiomediastinal and hilar contours remain stable . There is improvement in the left basilar opacity . A small left pleural effusion persists . There is no right pleural effusion . There is no pneumothorax . A new right basilar opacity is present , likely atelectasis , although pneumonia can not be excluded .
    OUTPUT:
    
New right basilar opacity , which may represent pneumonia in the correct clinical setting . Improvement in left basilar opacity , with persistent small left pleural effusion .