Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright view of the chest demonstrates hyperexpanded lungs and flattening of hemidiaphragms , compatible with underlying emphysema . There are prominent interstitial markings . Superimposed , there are airspace opacities in the right upper and bilateral lower lung zones , which appear new since prior exam . There is no pleural effusion . No pneumothorax . Hilar and mediastinal silhouettes are unchanged . Again noted are prominent pulmonary arteries , which may reflect underlying pulmonary hypertension . Heart size is top normal . Mild dextroscoliosis of the thoracic spine is noted .
    OUTPUT:
    
1 . Prominent interstitial markings suggestive of interstitial pulmonary edema . Subtle bilateral airspace opacities are new since prior and may reflect superimposed infection . 2 . Hyperextended lungs with flattened hemidiaphragms , compatible with known underlying emphysema . 3 . Prominent pulmonary arteries may reflect underlying pulmonary hypertension .