Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . There is also a dual - lead pacemaker / ICD device with leads again terminating in the right atrium and ventricle , respectively . The cardiac , mediastinal and hilar contours appear stable including cardiac enlargement . There has been partial resolution of atelectasis at the left lung base with better expansion of the lung , but with a persistent pleural effusion . In addition , there is a nodular focus measuring about 12 mm in diameter , which projects over the left lower lung , although most likely due to a nipple shadow . A new fine reticulonodular opacification pattern suggests mild pulmonary edema .
    OUTPUT:
    
1 . Mild new reticular nodular pattern suggesting mild pulmonary edema . 2 . Improved expansion of the lung at the left base , although with persistent small effusion , probably loculated and chronic . 3 . Nodular focus projecting over the left lower lung , newly apparent . Although it is likely to turn out to be a nipple shadow , when clinically appropriate , standard PA view with nipple markers is recommended for confirmation . Findings and recommendations discussed with Dr . ___ by telephone on ___ .