Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bedside AP radiograph of the chest demonstrates a marked increase in the left - sided pleural effusion , which now opacifies the entire left hemithorax . There is no shift of mediastinal structures away from the effusion , indicating considerable atelectasis / collapse of the underlying lung . This is confirmed by a blunt ending left main stem bronchus , which may be occluded . The small right - sided pleural effusion is unchanged . The right lung is clear . There is no pneumothorax . A tracheostomy tube is in place . A left internal jugular central venous catheter terminates in the mid SVC . An NG tube courses through the esophagus , into the stomach and inferiorly out of the field of view . Heart size is difficult to assess due to overlying effusion , but there is no pulmonary edema seen on the right .
    OUTPUT:
    
Marked increase in the left - sided pleural effusion with significant underlying multilobar atelectasis / collapse , concerning for large airway occlusion .