Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Exam is limited by significant rotation . Heart size is enlarged . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Cardiomegaly , but no evidence of pulmonary edema or pneumonia .