Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No change in the positioning of the right - sided chest tube . Right basilar atelectasis is persistent , with improved left lower lobe aeration . The heart is persistently moderately enlarged , without evidence of pneumothorax or pulmonary edema . A small to moderate right pleural effusion persists . No pneumothorax .
    OUTPUT:
    
Persistent small to moderate right pleural effusion and right basilar atelectasis . Continued monitoring with PA and lateral radiographs , when feasible , is advised .