Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP erect chest radiograph ___ 08 :01 is submitted .
    OUTPUT:
    
Dual lead left - sided pacer unchanged in position . Overall cardiac and mediastinal contours are stably enlarged but are difficult to assess given marked patient rotation . There is stable patchy opacity in the right upper lobe and interval appearance of airspace consolidation with air bronchograms in the left lung base concerning for pneumonia or aspiration , less likely atelectasis , given its focality . Possible small associated left effusion . Clinical correlation is advised . No pulmonary edema . No pneumothorax .