Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Mediastinal and hilar contours are unchanged , with known left hilar and mediastinal lymphadenopathy better demonstrated on the prior CT . Linear opacity within the left upper lobe is unchanged . No new focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
Unchanged linear opacity in the left upper lobe corresponding to known lesion seen on prior CT . No new parenchymal opacities to suggest pneumonia .