Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tiny left apical pneumothorax remains visible . On the current exam , lucency seen in the left costophrenic angle is again noted --___ much of this is accounted for by a pneumothorax at this time is unclear . Subcutaneous emphysema is probably similar to the prior study . No right - sided pneumothorax is detected . Atelectasis at the left base is similar , but probably slightly more pronounced . Minimal atelectasis in the right cardiophrenic region is unchanged . The patient is status post sternotomy . The cardiomediastinal silhouette is unchanged . The known calcified left ventricular aneurysm is again noted .
    OUTPUT:
    
1 . A tiny left apical pneumothorax remains visible , grossly unchanged . Lucency at the left costophrenic angle again noted . Please see comment above . 2 . Possible minimal increase in left base atelectasis , but the overall appearance is similar .