Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pleural effusion , pneumothorax or focal airspace consolidation . An S - shaped scoliosis of the thoracic spine is again appreciated . The heart size is enlarged , but unchanged . Mild prominence of the basilar interstitium may relate to underlying chronic lung disease . The mediastinal contour is unremarkable .
    OUTPUT:
    
Unchanged cardiomegaly without an acute intrathoracic process .