Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there is a new moderate right pleural effusion . Lung volumes are low . There is right perihilar streaky opacity and a subtle retrocardiac opacity which may reflect pneumonia in the correct clinical setting . There is no pneumothorax . Cardiomediastinal and hilar contours are unchanged . Calcifications are noted in the aortic knob . A ___ right humeral and clavicular fracture is noted .
    OUTPUT:
    
Moderate right pleural effusion . Subtle retrocardiac and right perihilar opacities may represent pneumonia in the correct clinical setting .