Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal opacity silhouetting the cardiac apex is new since ___ . No pulmonary edema , pleural effusion or pneumothorax . Normal mediastinal contours . The heart size is normal .
    OUTPUT:
    
No pneumothorax . Focal opacity silhouetting the cardiac apex , new since ___ , should be further evaluated with chest CT on a non-urgent basis .