Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a subtle the 7 mm nodular opacity projecting over the anterior aspect of the right fifth rib , appreciated only on the frontal projection . The lungs are otherwise clear . The heart size is normal . The mediastinal contours are normal . Calcifications are seen within a normal caliber thoracic aorta . There are no pleural effusions . No pneumothorax .
    OUTPUT:
    
1 . Possible 7 mm pulmonary nodule within the right mid lung . Further assessment with shallow oblique radiographs with nipple markers is recommended . 2 . No radiographic evidence of pneumonia .