Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior exam , the linear lucency along the apex of the right lung appears similar in size but now demonstrates an air - fluid level , which is consistent with a hydropneumothorax . Mild , linear opacity consistent with atelectasis at the right lung base . Otherwise , the lungs are expanded and clear . There is no pleural effusion or focal consolidation . The cardiomediastinal silhouette and hila are normal . The supraclavicular subcutaneous emphysema is slightly improved from the prior exam . Multiple old left - sided rib fractures with callus formation and mild , multi - level degenerative changes in the visualized thoracic spine are present .
    OUTPUT:
    
Small right apicolateral hydropneumothorax . Slight interval improvement in right supraclavicular subcutaneous emphysema . Mild right basilar atelectasis .