Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . A nodular opacity is seen projecting over the right lower lobe , which represents the nipple shadow . There are no focal consolidations . There are no pleural effusions or pneumothorax . Visualized osseous structures are unremarkable .
    OUTPUT:
    
No radiographic evidence of an acute cardiopulmonary process .