Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single AP chest view has been obtained with patient in semi-erect position . Analysis is performed in direct comparison with the next preceding similar study of ___ . As there is report of recently performed left - sided pneumonectomy , increased mediastinal shift towards the left is not surprising . There exists now an empty proportion of the left hemithorax in which a wide caliber chest tube advanced from the left lower lateral chest wall curves around and reaches the area of the posterior inferior pleural sinus . The contour of the left diaphragm is now obscured , but assuming that the left - sided pneumonectomy was total , the diaphragm appears to be elevated and one can identify partially gas - filled structures of the stomach . Pulmonary structures in the right hemithorax remain normal , without signs of congestion , new infiltrates or pleural effusions in the lateral sinus .
    OUTPUT:
    
Findings compatible with a total left - sided pneumonectomy . Right - sided lung remains normal .