Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left porta catheter remains in place , with tip terminating in the lower superior vena cava . The heart size remains normal . Improvement in right basilar atelectasis with residual linear atelectasis and volume loss remaining , but a new linear atelectasis has developed at the left lung base . No focal areas of consolidation to suggest the presence of pneumonia , and minimal blunting of the costophrenic angles is unchanged .
    OUTPUT:
    
Bibasilar atelectasis , but no areas of consolidation to suggest an acute pneumonia .