Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . The cardiomediastinal silhouette , hilar contours and pleural surfaces are normal . There is no pleural effusion or pneumothorax . A faint , square shaped density projecting over the right upper lobe is noted .
    OUTPUT:
    
Faint , square shaped density projecting over the right upper lobe is likely artifactual or external to the patient . If confirmation is desired the study could be repeated . Results submitted to the ED QA Nurses for communication to ___ primary care physician ; 11 :50 pm , ___ .