Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Detailed evaluation of lung apices is somewhat limited by overlying soft tissue from the chin . The patient has been extubated in the interim . Lung volumes remain low . Mild edema persists , overall similar . Bilateral pleural effusions persist but appear to have slightly improved . No pneumothorax . Cardiomediastinal contours are overall similar . The right PICC line tip projects over the expected region of the cavoatrial junction . Post surgical changes in the left humerus and deformity in the left shoulder are partially imaged but overall unchanged .
    OUTPUT:
    
Persistent mild edema with slight interval decrease in bilateral pleural effusions .