Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube is in place . Lung volumes remain low . The left lower lung is essentially airless and probably collapsed . Retrocardiac opacity persists and appears worse from prior exam , suggesting atelectasis or aspiration appropriate clinical setting . Blunting of the left costophrenic angle suggest atelectasis and / or small effusion . Platelike opacity in the right lower lung is probably atelectasis and slightly worse . The heart is severely enlarged , slightly worse compared to the prior exam . No frank pulmonary edema . The aortic valve is calcified , unchanged .
    OUTPUT:
    
1 . Increase in cardiomegaly without overt pulmonary edema . 2 . Slightly worse right lower lung atelectasis . 3 . Stable severe left lung atelectasis .