Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . Since prior study from 1 day ago , bilateral chest tubes and mediastinal drains have been removed . Right subclavian line terminates in the low SVC . There is a new right apical pneumothorax . Retrocardiac atelectasis continues to improve . Mild edema within the left lung is minimal . Small left pleural effusion is unchanged . The postoperative cardiomediastinum is stable .
    OUTPUT:
    
New tiny right apical pneumothorax .