Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest provided . The patient is slightly rotated to the left . There is increased opacity in the right lung base which is concerning for pneumonia . In addition , there is retrocardiac opacity , mostly in a linear configuration , which could represent atelectasis , less likely pneumonia / aspiration . A few scattered more nodular - appearing opacities are seen in the mid - to - upper lungs , at least one of which likely represents an EKG related to sternal artifact . No pneumothorax is seen . No large effusion . Overall , cardiomediastinal silhouette is stable . Bony structures appear intact .
    OUTPUT:
    
Opacity in the right lung base concerning for pneumonia . Presumed retrocardiac atelectasis . Additional nodular opacities in the right lower lung and left upper lung could represent true pulmonary nodules and a non-emergent chest CT is recommended to further assess once the acute symptoms resolve .