Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased interstitial markings bilaterally suggests mild interstitial edema . Rounded opacity at the right lung base may represent vascular structure as no clear correlate is seen on preceding abdominal pelvic CT which includes the lung bases . No large pleural effusion or pneumothorax is seen . The cardiac silhouette remains mild to moderately enlarged .
    OUTPUT:
    
Increased interstitial markings bilaterally raises concern for mild interstitial edema . Apparent nodular opacity at the right lung base does not have a clear correlate on subsequent CT .