Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Patient 's chin partially obscures the right lung apex . The lungs appear hyperinflated . The previously detected right lower lobe nodule is not clearly visualized . No convincing signs of pneumonia , effusion or pneumothorax . No edema . Cardiomediastinal silhouette appears grossly stable . Atherosclerotic calcifications along the aortic knob noted .
    OUTPUT:
    
Previously detected right lower lobe pulmonary nodule not clearly seen . No signs of superimposed pneumonia or edema .