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