Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate - sized left pleural effusion with apparent component of loculation laterally is similar in size to the previous radiograph , allowances are made for differences in technique and positioning . There remains associated left lower lobe collapse . Pulmonary vascular congestion is present , but recently described edema has nearly resolved .
    OUTPUT:
    
Moderate - sized , partially loculated left pleural effusion . If warranted clinically , this could be more fully evaluated by thoracentesis or CT imaging . Persistent left lower lobe atelectasis .