Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increasing left - sided pleural effusion with opacification of the left hemithorax . There is a loculated component along the lateral chest wall . There is increased retrocardiac density which may reflect atelectasis . There may be a trace apical pneumothorax . The right hemithorax is clear . Osseous structures are notable for a comminuted proximal left clavicle fracture .
    OUTPUT:
    
Increasing left - sided pleural effusion with loculated component about the lateral chest wall . Hemothorax is not excluded . If further evaluation is required , consider CT . Left lower lobe atelectasis . Comminuted left proximal clavicle fracture . Perhaps trace left apical pneumothorax .