Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . A subtle nodular opacity projecting over the anterior right first ribs measuring 1 .1 cm and appears to have a lucent margin , suggesting that it is outside the patient . Recommend clinical correlation for external artifact or any skin markings ( mole / sking tag ) at this site . Suggest repeat radiograph with marker overlying any skin tags and oblique views to exclude a pulmonary nodule . There is mild bibasilar atelectasis . No pleural effusion or pneumothorax . The cardiac silhouette is top normal to mildly enlarged . The aorta is tortuous . No evidence of free air is seen beneath the diaphragm . There are multiple air distended loops of bowel , partially imaged .
    OUTPUT:
    
1 . No evidence of free air beneath the diaphragms . 2 . Nodular opacity projecting over the right upper hemithorax with thin lucent margins , suggest that it is external to the patient . Recommend clinical correlation for external artifact or skin tag / mole and recomend repeat with marker overlying any skin findings as well as oblique views to exclude an underlying pulmonary nodule .