Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement in the presumed post radiation paramediastinal pneumonitis . Interval improvement in the pulmonary edema . The patient has been extubated . Transvenous right atrial and right ventricular pacer defibrillator leads continuous from the left pectoral generator . No pneumothorax . Bilateral pleural effusions noted . Persistent adjacent lower lobe atelectasis . Indwelling pin in situ in the midshaft of the right clavicle .
    OUTPUT:
    
Interval improvement in extent of bilateral perihilar opacities .