Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left Port - A - Cath tip ends in the right atrium . The lower half of the right hemi thorax is completely opacified with silhouetting of the right hemidiaphragm border and the right heart border . This is consistent with a moderate pleural effusion although there is not significant mass effect , suggesting a component of significant volume loss as well . Any concurrent pneumonia is possible in the appropriate clinical situation but can not be assessed in the setting of this moderate pleural effusion . No pneumothorax . The left lung is essentially clear .
    OUTPUT:
    
Moderate right pleural effusion with probable significant associated atelectasis . Any concurrent infection is possible in the appropriate clinical situation and can not be well assessed in the setting of an effusion .