Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderately enlarged . The aortic arch is calcified . There is cephalization of the pulmonary vascularity with indistinct contours and a mild diffuse interstitial abnormality . A focal component of opacification can be seen in the medial right lower lung , probably within the right lower lobe . There is no pleural effusion or pneumothorax . Mild - to - moderate degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
Findings suggesting mild venous hypertension or congestion . Focal patchy medial right lower lung opacity , for which atelectasis could be considered ; however , particularly if clinical findings raise concern , a developing focus of pneumonia could be considered and short - term follow - up radiographs may be helpful .