Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An NG tube extends to the stomach , however its tip projects beyond the lower edge of the film . The ET tube is in stable position 4 cm above the carina . Lung volumes remain low . The cardiomediastinal silhouette is unchanged . There is no pulmonary edema . Obscuration of the left hemidiaphragm with increased opacity in the left lower lung is concerning for pneumonia . Chronic right lower lobe opacity with elevation of the right base is unchanged .
    OUTPUT:
    
1 . New opacity at the left lung base is concerning for pneumonia . 2 . Unchanged right lower lobe opacity may be atelectasis , pneumonia , or pleural effusion . Results telephoned to Dr . ___ by Dr . ___ at 12 : 10 on ___ , 45 minutes after discovery .