Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs . There are two nodular densities in the right lower lung , not present on most recent radiograph . Lung volumes are low and subtle opacity in left lung base is unchanged from ___ . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Two right lower lung nodular opacities , not present on most recent radiograph . This is non-specific but may represent an early manifestation of hypersensitivity pneumonitis given this patient 's history .