Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Lower inspiratory effort seen on the current exam . Despite that , there appears to be interval progression of the right - sided pleural effusion . Fluid is also seen tracking within the major fissure more so than on prior . Underlying middle and lower lobe atelectasis and possible consolidation is possible . The left lung is grossly clear . Cardiomediastinal silhouette has not significantly changed . Post-traumatic changes seen at the coracoclavicular regions bilaterally .
    OUTPUT:
    
Interval progression of the right - sided pleural effusion . Underlying opacities at the right lung base potentially atelectasis although infection is also possible .