Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright portable radiograph of the chest demonstrates extremely low lung volumes , limiting assessment . Although there is likely some degree of pulmonary edema , there is marked crowding of the pulmonary vasculature is well . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Limited examination due to extremely low lung volumes . There is likely some degree of pulmonary edema .