Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semiupright radiograph of the chest demonstrates low lung volumes with resulting bronchovascular crowding . There is persistent small right sided pleural effusion with adjacent atelectasis . The left lung base has a similar appearance to prior with a tiny left - sided pleural effusion and adjacent atelectasis . The right - sided internal jugular central venous line ends at the mid-to - distal SVC . Tracheostomy tube ends 4 .6 cm from the carina . No pneumothorax .
    OUTPUT:
    
Tracheostomy tube ends 4 .6 cm from the carina . No evidence of pneumothorax .