Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent largely unchanged left upper lobe , right upper lobe and left lower lobe peribronchial consolidation . There are stable low lung volumes . No pleural effusion or pneumothorax . The cardiomediastinal silhouette is stable within normal limits . The pleural surfaces are unremarkable .
    OUTPUT:
    
Persistent bilateral peribronchial consolidations which might represent post-pneumonic fibrosis / inflammation , organizing pneumonia , Wegener 's granulomatosis , or less likely residual infection . Followup examination as clinically warranted is recommended .