Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographdemonstrates minimal pulmonary edema . No focal opacity . Persistent large cardiomegaly is noted . Mediastinal widening has slightly increased since previous examination and is likely accentuated likely due to low lung volumes . No pleural effusion or pneumothorax . Aortic arch calcifications are noted . Hila are unremarkable . Limited assessment of the upper abdomen is within normal limits . Multilevel degenerative changes are present throughout the thoracolumbar spine . Stable compression fracture of L2 vertebral body since ___ .
    OUTPUT:
    
1 . Minimal pulmonary edema . No pneumonia . 2 . Persistent large cardiomegaly . 3 . Mediastinal widening has slightly increased since previous examination , likely accentuated due to low lung volumes . 4 . Stable compression fracture of L2 vertebral body , unchanged since ___ .