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 no pleural effusion or pneumothorax . Streaky left basilar opacities are not specific , but more suggestive of atelectasis although potentially pneumonia . The right costophrenic sulcus is indistinct , which is non-specific ; minor scarring , trace pleural effusion or atelectasis could be considered . Small to moderate anterior osteophytes are noted along the thoracic spine .
    OUTPUT:
    
Non-specific retrocardiac opacification . Atelectasis would explain the findings , but in the appropriate setting , pneumonia could be given consideration .