Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest demonstrate the lungs are well expanded and clear . There is no pneumothorax , pleural effusion , pulmonary edema , or focal airspace consolidation . The heart is mildly enlarged , and a left chest wall pulse generator is present , with leads terminating in the right atrium and right ventricle . Median sternotomy wires are present , and are intact . Rightward convex scoliotic curvature of the thoracic spine is noted .
    OUTPUT:
    
Mild cardiomegaly . Otherwise , no acute cardiopulmonary process .