Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ETT tip ends above the clavicles , 55 mm above the carina . Decreased lung volumes . Cardiomegaly . Marked interval progression of the bilateral mid and lower lung zone airspace opacification with bilateral pleural effusions .
    OUTPUT:
    
ET tip 55 mm proximal to the carina , but please note that the patient has a relatively short trachea and no more than 2 - 3 cm advancement is advised . This was telephoned to the referring physician . Marked progression of the bilateral mid to lower lung zone airspace opacification which most likely represents pulmonary edema but superimposed infection or aspiration can not be excluded .