Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the radiograph performed 1 day ago retrocardiac opacity and right mid lung opacity adjacent to the known mass have increased . In addition a small left pleural effusion is new . There is no pneumothorax . The cardiac and mediastinal contours are stable .
    OUTPUT:
    
New retrocardiac opacity could represent atelectasis , aspiration or infection . Increasing opacity in the right mid lung adjacent to the biopsied mass is consistent with hemorrhage . New small left pleural effusion .