Decreased lung volume on the left with associated basilar opacification and pleural effusion. A pleural edge is visible along the superior left lateral chest wall, with no significant pneumothorax. Subcutaneous emphysema is present along the inferior left lateral chest wall, not seen on the previous film.
Simple pleural effusion (Present) Atelectasis (Present) Simple pneumothorax (Absent) Subcutaneous Emphysema (Present)