Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral radiographs were acquired of the chest . The left lung base is difficult to assess secondary to patient body habitus , although hazy opacification overlying the left mid - to - lower lung is not significantly changed compared to the prior study from ___ . There is mild right basilar atelectasis . The lungs are otherwise clear . Mild cardiomegaly is not significantly changed . The thoracic aorta is ectatic , not significantly changed in caliber compared to the prior study from ___ . Tortuosity of the thoracic aorta is unchanged . Wedging of multiple thoracic vertebral bodies is not significantly changed .
    OUTPUT:
    
1 . No definite acute intrathoracic process . The left lung base is difficult to assess , but stable compared to the prior study . 2 . Stable mild cardiomegaly and ectasia of the thoracic aorta .