Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The examination is extremely limited secondary to patient body habitus . Linear opacity within the peripheral left mid lung is unchanged and corresponds to scarring . No definite confluent consolidation is identified . A bilobed density in the left upper lung is unlikely to represent a true consolidation given how misleading the chest radiographic findings are as compared to CT appearance of the lung bases . Low lung volumes and overlying soft tissue attenuation cause exaggeration of interstitial marking , though no overt edema is evident . There is no large pleural effusion . Mediastinal and hilar contours are within normal limits . Mild apparent enlargement of the cardiac silhouette is likely partly due to the AP technique and a large epicardial fat pad . There is no pneumothorax .
    OUTPUT:
    
Limited examination , though no definite pneumonia .