Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval removal of left chest tube with mild increase in loculated left pleural effusion with small amount of loculated air . No change in retrocardiac opacity partially obscuring the left diaphragmatic pleural surface . Mild improvement in right lower lobe atelectasis . No additional focal opacity , pulmonary edema or pneumothorax . Stable mildly enlarged heart without change in mediastinal contour or hila . No bony abnormality .
    OUTPUT:
    
1 . Interval removal of left chest tube with mild increase in loculated left pleural effusion with loculated air . 2 . Unchanged retrocardiac opacity may represent pneumonia in the appropriate clinical setting . No pneumothorax . Results were conveyed via telephone to Dr . ___ by Dr . ___ on ___ at 11 :45 a .m . within 15 minutes of observation of findings .