Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate clear lungs . The hilar and mediastinal contours are normal . The mediastinal appearance is unchanged from ___ aside from new atherosclerotic calcifications in the aortic arch . The cardiac apex is upturned , which may be a normal variant , or may indicate left ventricular enlargement . However , there are no pulmonary manifestations cardiac decompensation . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . There is no mediastinal widening . 3 . Upturned configuration of cardiac apex may be a normal variant but could also indicate left ventricular enlargement . No evidence of cardiac decompensation .