Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , limiting assessment of the lung bases , although streaky left basilar atelectasis is suspected . Elsewhere , the lungs appear clear . There are no definite pleural effusions or pneumothorax . The stomach is mild - to - moderately distended with an air - fluid level . Characterization of dilated bowel is better depicted on abdominal radiographs that cover the whole abdomen and pelvis from the same day .
    OUTPUT:
    
No evidence of pneumonia .