Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is been short interval development of left upper lobe parenchymal opacities suspicious for a lingular / left upper lobe pneumonia . Right apical parenchymal opacity is also noted , potentially due to overlapping shadows although additional area parenchymal opacification is possible . Cardiomediastinal silhouette is within normal limits . Mid thoracic dextroscoliosis is noted .
    OUTPUT:
    
Interval development of parenchymal opacities in the left lung suspicious for pneumonia . Followup suggested after treatment to document resolution .