Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 16 : 26 is submitted .
    OUTPUT:
    
A right - sided pacer remains in place with the leads intact and terminating over the right atrium and right ventricle , respectively . There has been interval decrease in size of a right pleural effusion status post thoracentesis with improved aeration at the right base and no definite pneumothorax identified . No pulmonary edema . Stable left apical opacity likely reflecting post radiation changes . No focal airspace consolidation to suggest pneumonia . Stable cardiac and mediastinal contours . Multiple surgical clips overlying the right lower hemi thorax consistent with prior mastectomy and reconstruction .