Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright view of the chest was reviewed . Compared to the most recent prior of ___ , lung volumes have increased but moderate bibasilar atelectasis and possible small bilateral pleural effusions persist . The left chest tube ends in the apex and all the side ports are in the hemithorax . There is no pneumothorax . The right subclavian line ends in the mid superior vena cava . Moderate cardiomegaly is unchanged . Median sternotomy wires are intact and unchanged compared to the most recent post operative film .
    OUTPUT:
    
1 . No pneumothorax . 2 . Increased lung volumes since ___ . 3 . Moderate bibasilar atelectasis and possible small bilateral pleural effusion are unchanged .