Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable single frontal chest radiograph was obtained with the patient in semi-upright position . A left subclavian line terminates in the mid SVC . There are new increased opacities in the left retrocardiac region . Again seen are unchanged bilateral upper lung peripheral opacities , consistent with prior sarcoidosis . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette and hilar contours are unchanged . A known comminuted fracture of the right humerus is noted .
    OUTPUT:
    
New left retrocardiac opacification which may reflect atelectasis or an early consolidation .