Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is detected . Heart and mediastinal contours are stable with mild cardiomegaly . Single - lead cardiac pacemaker appears similarly positioned . Hardware overlies the left upper outer chest , limiting evaluation of the underlying lung parenchyma .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process with stable pacemaker positioning .