Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is a left - sided PICC line with tip at cavoatrial junction . Cardiomediastinal silhouette is probably unchanged allowing for technique . There is bibasilar atelectasis , slightly improved bilaterally in the setting of slightly improved inspiratory volumes . Upper zone redistribution , without definite CHF . No gross consolidation or effusion . Extreme right costophrenic angle excluded by the device outside the patient . No pneumothorax detected .
    OUTPUT:
    
Bibasilar atelectasis again seen , slightly improved . No definite aspiration pneumonitis . No no frank focal consolidation . Possible minimal upper zone zone redistribution , without overt CHF