Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable frontal AP chest film of ___ at 10 :42 is submitted .
    OUTPUT:
    
Right subclavian line is unchanged in position . Right basilar chest tube remains in place . A basilar left chest tube remains in place with the second tube having been removed . There is marked interval improvement in aeration within the left lung with residual patchy opacity in the mid lung . This may reflect residual atelectasis , although contusion should also be considered as this opacity is in the same vicinity as the previous chest tube . No large effusion is seen . The patient is status post median sternotomy with CABG and valve replacement and stable postoperative mediastinal and cardiac contours . There is a stable small right apicolateral pneumothorax . No definite pneumothorax is seen on the left . No pulmonary edema .