Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is little change compared to ___ with persistent retrocardiac opacity with air bronchograms , worrisome for pneumonia . Moderate cardiomegaly and exaggerated kyphosis of the spine is unchanged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Unchanged retrocardiac densities with air bronchograms which continue to be worrisome for pneumonia .