Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is right apical scarring . Nodular abnormalities are seen in the left lung base , more dense today than on prior exam , possibly representing mucoid impaction . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . Mid-thoracic and lumbar vertebroplasty changes are noted , similar to prior exam .
    OUTPUT:
    
Nodular abnormalities in the left lung base , more dense today than on prior exam , possibly representing mucoid impaction . Recommend either chest CT for further characterization or repeat chest radiographs after epmiric treatment for mucous plugging and bronchiectasis .