Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes account for bibasal atelectasis . In addition there is a right - sided pleural effusion along with additional opacities which could represent atelectasis but in the correct clinical setting pneumonia can not be ruled out . The left lung appears relatively clear . The cardiac silhouette is enlarged . No pneumothorax . Chronic bilateral shoulder abnormalities are not fully evaluated .
    OUTPUT:
    
Right pleural effusion with additional basilar opacities which likely represent atelectasis . Pneumonia in the correct clinical setting can not be ruled out .