Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild cardiomegaly . A tortuous aorta with calcifications is present . While there is increased opacities particularly at the left lung base on the frontal radiograph , no correlate is demonstrated on the lateral view therefore this most likely represents atelectasis , although pneumonia can not be ruled out . No pulmonary edema , pleural effusion , or pneumothorax is present . There are flattened diaphragms consistent with hyperinflation .
    OUTPUT:
    
Left basilar opacities , likely atelectasis , but pneumonia in the correct clinical setting should be considered .