Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . Obscuration of the right heart border is likely related to pectus excavatum as opposed to an infiltrate . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Dextroscoliosis of the thoracolumbar spine is redemonstrated .
    OUTPUT:
    
No acute cardiac or pulmonary process . Specifically , no findings to suggest right middle lobe pneumonia .