Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal upright and lateral chest radiographs demonstrate well - expanded lungs . Heart is top normal in size . Cardiomediastinal contours are unremarkable . Linear bibasialr opacities most likely reflect atelectasis . No focal areas of consolidation . There is no pleural effusion and no pneumothorax . A PICC is again seen on the right , terminating in the mid SVC , similar to prior .
    OUTPUT:
    
No evidence of pneumonia .