Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is a streaky opacity projecting over the left mid lung , probably in the lingula , which is suggestive of atelectasis , but which could potentially represent an early focus of pneumonia . There is no pleural effusion or pneumothorax . Small osteophytes are noted along the thoracic spine .
    OUTPUT:
    
Streaky left mid lung opacity , probably in the lingula , which could be seen with minor atelectasis , although early pneumonia is also a possibility in the appropriate clinical setting .