Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrate intact median sternotomy wires . Numerous clips project over the left mediastinal border . Lungs are clear bilaterally without a focal consolidation . Heart size is normal . Hilar and mediastinal contours are otherwise within normal limits . There is no evidence of pulmonary edema , pleural effusion , or pneumothorax . Imaged upper abdomen demonstrates no acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .