Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . The heart is not enlarged . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . There is no pulmonary edema . Posterior spinal fusion from T12 through L2 with bilateral pedicle screws and interlocking rods . Compression deformities of T12 and L1 are better evaluated on prior lumbar spine radiographs .
    OUTPUT:
    
No acute cardiopulmonary abnormality .