Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with crowding of vasculature . Right lower lobe opacity is most consistent with atelectasis and only seen on frontal projection . No pleural effusion or pneumothorax . Moderate cardiomegaly is stable . Mediastinal contour and hila are unremarkable . A dual chamber left - sided pacemaker with leads in expected positions of the right atrium and right ventricle .
    OUTPUT:
    
1 . Stable moderate cardiomegaly . 2 . No acute cardiopulmonary process , specifically no pulmonary edema or pneumonia .