Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right hemidiaphragm is elevated as seen on prior studies . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The pulmonary artery is mildly enlarged consistent with pulmonary arterial hypertension . Heart size of normal .
    OUTPUT:
    
1 . Heart size is normal . No evidence pericardial effusion . 2 . Mildly enlarged pulmonary artery consistent with pulmonary arterial hypertension . 3 . No acute cardiopulmonary process .