Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . Lung volumes are slightly low , causing exaggeration of the heart size and accentuation of the pulmonary vasculature . There is subsegmental left mid and lower lung linear atelectasis . The lungs are otherwise clear . Mild - to - moderate cardiomegaly is not significantly changed compared to the radiographs from ___ . There are no pleural effusions . No pneumothorax is seen . Aortic calcifications are re-demonstrated . Multilevel degenerative changes of the thoracolumbar spine are again seen . Heterotopic calcification in the left cervical region could be within the left common carotid artery , unchanged .
    OUTPUT:
    
1 . No acute cardiac or pulmonary process . 2 . Mild - to - moderate cardiomegaly , not significantly changed .