Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates hyperinflated lungs with prominent interstitial markings , which may be age related , or may represent small airways disease . The pulmonary arteries are prominent bilaterally , consistent with pulmonary arterial hypertension . The heart is mildly enlarged . There is no pneumothorax , consolidation or evidence of pulmonary edema .
    OUTPUT:
    
No pneumonia . Enlarged pulmonary arteries consistent with pulmonary arterial hypertension .