Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right subclavian catheter remains in standard position , and cardiomediastinal contours are within normal limits and without change . Lungs are clear except for a linear focus of opacity in the right middle lobe . There are no pleural effusions or acute skeletal findings . Scoliosis is incidentally noted .
    OUTPUT:
    
___ evidence of pneumonia .