Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . Diffuse increased interstitial markings bilaterally persists but are perhaps slightly improved since the exam on ___ . This appears most consistent with cardiopulmonary edema in the setting of moderate cardiomegaly and a small right pleural effusion , interstitial pneumonia can not be excluded in the appropriate clinical scenario . A left pleural effusion , if present is trace . Retrocardiac linear streak like opacities may reflect atelectasis , slightly decreased from the prior exam but were also present in ___ . No pneumothorax . The patient is status post median sternotomy , unchanged . Extensive aortic knob calcifications are also unchanged . The descending thoracic aorta is tortuous , similar the prior exam . A C - shaped radio opacity projecting over the midline in the region just above the hiatus on the frontal view is also seen on the lateral view and is of uncertain etiology but is unchanged . Extensive degenerative changes of the thoracic spine with mild , broad S - shaped scoliosis of the thoracolumbar spine is overall similar to the prior exam . No acute osseous abnormality .
    OUTPUT:
    
Bilateral prominent interstitial markings likely reflects edema in setting of moderate cardiomegaly and small pleural effusion , slightly improved from ___ . Nonetheless , interstitial pneumonia can not be excluded in the appropriate clinical situation . No definite focal consolidation to suggest a focal pneumonia .