Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . Other than minimal linear streak like opacities in the left lower lobe , which reflect atelectasis , the lungs are clear . Mild elevation of the left hemidiaphragm is also unchanged . No pleural effusion , pneumothorax , edema , or focal consolidation . Cardiac and mediastinal contours are overall unchanged . Status - post AVR . Median sternotomy wires appear intact and unchanged in position . No evidence of acute osseous abnormality on this nondedicated exam .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . No evidence of fracture on this nondedicated exam . Consider obtaining dedicated films corresponding to areas of focal exam findings .