Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show persistently low inspiratory lung volumes . Mild biapical pleural thickening is unchanged . No focal consolidation , pleural effusion , or pneumothorax is present . Mild mediastinal and pulmonary vascular engorgement is noted . Mildly increased interstitial lung markings are equivocal for mild pulmonary edema in the setting of low lung volumes . The cardiac silhouette is mildly enlarged with ring shadowing at the cardiac apex suggestive of myocardial calcification which could be related to aneurysm formation or prior myocardial infarction . The thoracic aorta is slightly unfolded and heavily calcified , particularly along the descending portion . The mediastinal and hilar contours are stable with prominence of the azygos vein . The patient is status post median sternotomy with wires intact and multiple surgical clips projecting along the left cardiac border consistent with prior cardiac surgery . A left supraclavicular dual - channel dialysis catheter is unchanged in position with the tip terminating in the right atrium . Surgical clips are noted in the right upper quadrant of the abdomen consistent with prior cholecystectomy .
    OUTPUT:
    
1 . No focal consolidation concerning for pneumonia . 2 . Mild mediastinal and pulmonary vascular engorgement . 3 . Stable moderate cardiomegaly with possible calcification at the cardiac apex suggesting aneurysm formation or prior myocardial infarction . 4 . Findings equivocal for mild pulmonary edema in the setting of low lung volumes . No pleural effusions .