Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of a left chest drain . Opacification of the left juxta -hilar region is similar to prior pre-operative examination , findings corresponding to site of known mass . Overall aeration of the lungs is improved with decreased basilar atelectasis and vascular congestion . Mild blunting of the right costophrenic angle is consistent with a small effusion and is unchanged from prior . Cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax . Linear vertical opacity within the left upper lung likely reflects subsegmental atelectasis .
    OUTPUT:
    
1 . Interval left chest tube removal . No pneumothorax . 2 . Unchanged small right pleural effusion . 3 . Decreased pulmonary vascular congestion and improved aeration of the lungs .