Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . There is minimal left lower lung atelectasis . The lungs are otherwise clear . The heart is mildly enlarged . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Note is made of a left - sided pacemaker / ICD with a single right ventricular lead .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Mild cardiomegaly .