Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent left base opacity which could be due to consolidation due to infection or aspiration . Underlying left pleural effusion with atelectasis could be present . The right lung is grossly clear aside from pulmonary vascular congestion . No right pleural effusion is seen . There is no evidence of pneumothorax . The heart remains mildly enlarged . The aortic knob is calcified . Large - bore dual - lumen right central venous catheter terminates at the cavoatrial junction / right atrium .
    OUTPUT:
    
Persistent left base opacity raises concern for consolidation , underlying pleural effusion with atelectasis may also be present . Pulmonary vascular congestion .