Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Given slightly low lung volumes , the lungs are essentially in clear with only subsegmental atelectasis in the left lung base . There is no evidence of pneumonia , pneumothorax , or pleural effusion . Cardiac silhouette is normal in size . Right - sided port tip terminates at the SVC / right atrial junction .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .