Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without effusion , consolidation , or edema . Moderate cardiac enlargement and tortuosity of the descending thoracic aorta are again noted . Left shoulder arthroplasty changes in degenerative changes at the right AC joint are seen . Surgical clips project over the upper abdomen .
    OUTPUT:
    
Cardiomegaly without superimposed acute cardiopulmonary process .