Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . As seen previously , there is a marked kyphosis at the thoracolumbar junction visualized on the lateral projection . There is a retrocardiac opacity which could represent the descending thoracic aorta or a hiatal hernia . The lungs appear essentially clear without focal consolidation , effusion or pneumothorax . Overall , cardiomediastinal silhouette appears normal . No definite acute bony abnormalities are detected . Streaky opacities in the left lower lung are likely reflective of atelectasis .
    OUTPUT:
    
No acute findings . Severe kyphosis of the thoracolumbar junction .