Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . A left chest wall AICD pack is seen with dual leads extending to the region of the right atrium and right ventricle , unchanged in position . The heart is top normal in size . The mediastinal contour is unremarkable . The lungs appear clear without overt pulmonary edema or evidence of pneumonia . No effusion or pneumothorax is seen . The imaged bony structures appear intact . There is no free air below the right hemidiaphragm .
    OUTPUT:
    
Top normal heart size without acute intrathoracic process .