Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hypoinflated with crowding of vasculature . Lungs are otherwise clear . No apical cap . No pleural effusion or pneumothorax . There is stable mild cardiomegaly , likely accentuated due to low lung volumes . Mediastinal contour and hila are unremarkable . A left chest wall pacer device lead tips are in the right atrium , right ventricle , and coronary sinus .
    OUTPUT:
    
1 . Hypoinflated lungs with crowding of vasculature . 2 . Stable mild cardiomegaly . 3 . Left chest wall pacer device lead tips in appropriate position .