Large left pleural effusion with near-complete opacification of the left hemithorax, minimal aeration in the lateral upper lung field, and associated atelectasis. There is a significant mediastinal shift to the right with tracheal deviation, consistent with the patient's known thoracic mass.
Simple pleural effusion (Present) Mass/Solitary lung mass (Present) Atelectasis (Present) Tracheal deviation (Present)