Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates bibasilar subsegmental atelectasis . Endotracheal tube has been removed Chest tubes project over the bilateral hemithoraces . As before , there is a tiny right apical pneumothorax , which is unchanged . The the large cardiomediastinal and hilar contours are unchanged . There is a right - sided internal jugular central venous line which ends in the proximal SVC . Median sternotomy wires are in place .
    OUTPUT:
    
Persistent small right apical pneumothorax .