Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Subtle 7 mm rounded opacity projecting over the right lower lung is grossly stable as compared to the prior study and may relate to nipple shadow ; however , suggest confirmation with repeat with nipple markers . Otherwise , no focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable . No displaced fracture is seen .
    OUTPUT:
    
Subtle ovoid 7 - 8 mm nodular opacity projecting over the right lung base only seen along the frontal images , not on the other frontal images , most likely a nipple shadow or artifact , similar in appearance as compared to the prior study . Similar size . Findings can be further assessed with repeat with nipple markers .