Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A spinal stimulator device projects over the left hemithorax , as before . The cardiac , mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . Streaky right basilar opacity suggests a small focus of atelectasis or scarring . There is no evidence for pneumonia or congestive heart failure . A prior healed fracture is noted along the distal right clavicle .
    OUTPUT:
    
No evidence of acute disease .