Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new , moderate to large right pneumothorax . When compared to the prior chest radiograph , there is a small amount of mediastinal shift toward the left . Overall pulmonary interstitial opacities are essentially unchanged , but accentuated on the right by the pneumothorax . Heart size is normal . Cardiomediastinal and hilar silhouettes are unremarkable . No pleural effusion . A right - sided Port - A - Cath terminates in the low SVC . An endotracheal tube terminates 6 .3 cm above the carina . Bilateral pigtail pleural drains are noted .
    OUTPUT:
    
1 . New , moderate to large right pneumothorax with a small amount of leftward mediastinal shift raising concern for tension . 2 . Interstitial opacities are essentially unchanged .