Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest were obtained . A moderate right - sided effusion is grossly similar to ___ . A tiny left effusion has resolved . Bibasilar opacities likely reflect atelectasis , unchanged . The remainder of the lungs are stable with no new consolidations . The heart and mediastinal contours are normal . No pneumothorax or pulmonary vascular congestion .
    OUTPUT:
    
Stable moderate right pleural effusion and resolution of previously noted left pleural effusion . Bibasilar airspace opacities likely reflect atelectasis , though infection can not be completely excluded .