Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall AICD is again noted with leads extending into the Coronary sinus , right atrium and right ventricle . Lungs are clear and hyperinflated . Minimal platelike left basal atelectasis is noted . No large effusion or pneumothorax . No convincing sign of edema or congestion . Heart size is top - normal . Mediastinal contours unremarkable . Bony structures are intact .
    OUTPUT:
    
COPD without superimposed pneumonia or edema . Top - normal heart size .