Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable , semi-upright radiograph of the chest demonstrates low lung volumes with resulting bronchovascular crowding . There is increased opacification of the bilateral bases to the mid lung fields , which most likely represents pulmonary edema , however underlying infection can not be excluded . There is severe cardiomegaly , which is stable . There are small to moderate bilateral pleural effusions . There is no pneumothorax .
    OUTPUT:
    
1 . Increased opacification of the bilateral bases to the mid lung fields , which most likely represents pulmonary edema , however underlying infection can not be excluded . 2 . Stable cardiomegaly . 3 . Small - to - moderate bilateral pleural effusions .