Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a retrocardiac and left lower lung field opacities obscuring the left heart border and left hemidiaphragm confirmed in the lateral view . There is also a small left sided pleural effusion . A calcified granuloma is again noted in the right upper lung field , but no other focal opacities . There is no pneumothorax or right - sided pleural effusion .
    OUTPUT:
    
Left sided pleural effusion with underlying airspace disease likely representing atelectasis versus left lower lobe / lingular pneumonia .