Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided central venous catheter is similar in position given some patient rotation however , appears slightly angulated distally . . Interval removal of previously seen right - sided PICC . Left base opacity could be due to atelectasis or infection . No large pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Similar appearance a right - sided dialysis catheter as compared ___ although distally there is some angulation , also seen on the prior study . Left base opacity , atelectasis versus pneumonia / aspiration .