Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pneumothorax . Elevation of the right hemidiaphragm and right apical radiation fibrosis changes are stable . There may be an increased small right pleural effusion . Aeration of the residual right lung is decreased , with worsening opacification , which might be attributed to decreased lung volumes compared with the prior study . Asymmetric pulmonary edema or superimposed pneumonia are possible in the proper clinical setting . The right apical small collection of air and fluid is unchanged .
    OUTPUT:
    
Decreased aeration of the residual right lung with worsening opacification , which might be attributed to decreased lung volumes , though asymmetric edema or superimposed pneumonia are possiblities .