Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The heart is moderately tortuous . The lingula appears collapsed with a triangular shape . Vague opacities are probably for the most part subpleural about the lower right hemithorax with streaky character , possibly due to chronic scarring or atelectasis , which seems more likely to explain the finding than acute infection . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggest collapse of the lingula . Short - term follow - up radiographs are recommended to reassess in addition to comparison to prior radiographs , if available from elsewhere . In addition to sequela of mucus plugging or infection , subtle obstructing masse is not excluded by this examination .