Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . When compared to prior , there has been no significant interval change . Again , relatively low lung volumes are seen . There is retrocardiac opacity on the frontal view which correlates with increased density projecting over the right hemidiaphragm on the lateral view . This is not significantly changed however and may represent atelectasis noting pneumonia can not be excluded . Left lower lung calcified granuloma and bilateral hilar calcified nodes suggest previous granulomatous infection . No acute osseous abnormality detected .
    OUTPUT:
    
Streaky left basilar opacity potentially due to atelectasis in setting of low lung volumes , however pneumonia can not be excluded . Repeat exam with better inspiratory effort can be attempted if desired .