Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . AICD is unchanged with lead extending to the region of the right ventricle . The heart is mildly enlarged . There is hyperinflation of the lungs which could reflect underlying COPD . Bilateral lower lung air densities are most compatible with atelectasis or scarring . There is no focal consolidation concerning for pneumonia . No pulmonary edema , effusion or pneumothorax is seen . The mediastinal contour is stable . Bony structures are intact . Clips are noted in the right upper quadrant .
    OUTPUT:
    
Mild cardiomegaly , COPD , no acute intrathoracic process .