Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral views of the chest demonstrate low lung volumes , accentuating the heart size , which is moderately enlarged . The mediastinal contours are otherwise stable . A large left goiter deviates the trachea , and is unchanged . There is no overt pulmonary edema , pneumothorax , or large pleural effusion . Atelectasis is present at the lung bases , although underlying infection is possible in the appropriate clinical setting .
    OUTPUT:
    
Moderate cardiomegaly with low lung volumes and bibasilar atelectasis ; however underlying infection is possible in the appropriate clinical setting .