Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two frontal and one lateral chest radiograph were obtained . There is a background of bullous emphysema . Opacity previously seen projecting over the lower portion of the spine may represent a focal consolidation . No other areas of concerning consolidation are identified . There is linear opacity at the right base . Otherwise , the lungs are clear . The appearance of the heart and mediastinum are unchanged .
    OUTPUT:
    
Linear opacity at the right base could represent atelectasis , or a small focus of consolidation . Suggest follow - up to resolution given the background COPD .