Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are within normal limits and similar to the thoracic spine radiograph of ___ . Lungs are hyperinflated and note is made of a few scattered areas of linear scarring predominantly in the left mid and lower lung . Skeletal structures reveal apparent partial fusion of the right fifth and sixth posterior ribs as well as several other rib deformities and the presence of a fusion rod , the latter demonstrating a similar appearance to prior thoracic spine radiographs of ___ .
    OUTPUT:
    
No radiographic evidence of pneumonia .