Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed and compared to the prior studies . A right ___-___ opacity with fiducial marker is relatively unchanged compared to the most recent chest radiograph and represents right upper lobe wedge resection and postradiation changes . There is right lower lung atelectasis , otherwise , the lungs are clear without pulmonary edema . There is no focal or new consolidation . A small to moderate right - sided pleural effusion is relatively unchanged compared to the scout views of the CT Torso from ___ . Normal heart size . No pneumothorax .
    OUTPUT:
    
Relatively unchanged small to moderate right pleural effusion .