Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes with bronchovascular crowding . There is increased heterogeneous opacification seen in the mid and lower right lung fields consistent with asymmetric pulmonary edema versus aspiration . Small right - sided pleural effusion . Cardiomediastinal and hilar contours are unchanged . There is no pneumothorax .
    OUTPUT:
    
Heterogeneous opacification of the right mid and lower lung fields is concerning for asymmetric pulmonary edema versus aspiration .