Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval radiographic resolution of a large right midlung zone opacity . There is a small amount of residual fluid at the posterior aspect of the horizontal fissure , with mild adjacent atelectasis . There is no focal consolidation , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . Interval radiographic resolution of right upper lobe pneumonia . 2 . Small amount of residual fluid in the horizontal fissure with mild adjacent linear atelectasis .