Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Linear infrahilar streaky opacities are most consistent with atelectasis , although aspiration is possible . No focal consolidation , edema , effusion , or pneumothorax . Rounded opacities projecting over the left lateral hemithorax on the frontal view could potentially reflect pulmonary nodules . The heart is mildly enlarged . Median sternotomy wires and mediastinal clips appear intact . The osseous structures appear dense , consistent with history of metastatic prostate cancer . Multi - level degenerative changes in the thoracic spine are mild . No acute osseous abnormality .
    OUTPUT:
    
1 . Low lung volumes and atelectasis . 2 . Possible aspiration . 3 . Mild cardiomegaly without evidence of edema . 4 . Dense bones , consistent with history of metastatic prostate cancer . 5 . Possible left pulmonary nodules . Recommend correlation with prior imaging not currently available on PACS .