Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . Opacity seen in the lateral right lung base , likely reflecting a pleural effusion the site of the previous collection . Opacity seen in the medial right lung base is consistent with right lower lobe collapse . Fluid seen traversing the right lung likely reflects fluid in the oblique fissure . There is no pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
1 . Pleural effusion in the site of the previous collection in the lateral right lung base and the oblique fissure . 2 . Opacity in the medial right lung base consistent with right lower lobe collapse .