Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . The previous left upper and lower lung opacities have cleared . There is now an area of increased opacity over the lingula that partially obscures the left heart border . The right lung is fully expanded and clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Focal opacity in lingula concerning for pneumonia . Dr .___ was paged for notification at 4 : 10 pm and emailed at 6 : 40 pm on ___ .