Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pacemaker generator overlies the left chest wall . Right atrial and biventricular leads appear in expected position . Temporary epicardial pacing leads project over the left ventricle . There has been interval placement of a right internal jugular central venous catheter , terminating in the upper SVC . Lung volumes are low , and there is increased opacification of the left lung base , suggesting worsening atelectasis and pleural effusion . Opacities in the right lung base appears stable and likely reflect atelectasis . There is no post-procedure pneumothorax .
    OUTPUT:
    
1 . Increasing left basilar opacity , suggestive of worsening effusion and atelectasis . 2 . No post-procedural pneumothorax .