Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral radiographs of the chest were acquired . The lung volumes are slightly low , causing accentuation of the pulmonary vasculature . Ill - defined opacities thought to be in the lingula , but best seen on the lateral projection , are likely atelectasis , although an infectious process can not be excluded . Otherwise , the lungs are clear . The cardiac and mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Multilevel degenerative changes of the thoracolumbar spine are noted .
    OUTPUT:
    
1 . Lingular atelectasis , less likely pneumonia . 2 . Low lung volumes .