Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The NG tube tip is in the stomach . There is dense retrocardiac opacity compatible with volume loss / infiltrate / effusion . There is diffuse increase in interstitial markings , right greater than left and it is unclear if this is secondary to asymmetric pulmonary edema or an infectious process . There is volume loss in the right lower lobe as well . The heart is moderately enlarged and is larger than on the prior study . There are bilateral effusions , left greater than right .
    OUTPUT:
    
Asymmetric pulmonary edema versus infection .