Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Lungs are clear without focal consolidation . Blunting of the left costophrenic sulcus posteriorly may suggest a trace left pleural effusion . There is no pneumothorax . No acute osseous abnormalities identified . Mild loss of height of a mid thoracic vertebral body is re - demonstrated as is diffuse osteopenia .
    OUTPUT:
    
Small left pleural effusion posteriorly . No focal consolidation to suggest pneumonia .