Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are grossly clear . Nodular opacities projecting over the lung bases bilaterally are most likely nipple shadows . Cardiomediastinal silhouette is within normal limits . Prosthetic aortic valve is seen . Median sternotomy wires and mediastinal clips are noted . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process , no edema . Nodular opacities projecting over the lung bases , most likely nipple shadows however repeat with nipple markers can be performed to confirm .