Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right Port - A - Cath ends in the distal SVC , stable from the prior study . Heart size is top - normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . The pulmonary arteries are chronically enlarged . Subtle H - shaped vertebral bodies are likely related to the patient 's history of sickle cell disease .
    OUTPUT:
    
Heart size is top - normal . No overt pulmonary edema or focal consolidation .