Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Dense mitral annular calcifications are re- demonstrated . Mild cardiomegaly is again noted , unchanged . The mediastinal and hilar contours are stable . Pulmonary vasculature is minimally engorged . Linear opacity within the right upper lobe with right lateral pleural thickening is similar to the previous study . Moderate right pleural effusion appears somewhat increased in size compared to the previous study with worsening right basilar opacity , likely atelectasis . Infection however is not completely excluded . Left lung is clear without focal consolidation . Trace left pleural effusion is without change . No pneumothorax is demonstrated .
    OUTPUT:
    
1 . Slight interval increase in size of moderate right pleural effusion with worsening right basilar opacification likely reflective of compressive atelectasis . Infection however is not excluded . 2 . Linear opacity in the right upper lung field with adjacent pleural thickening is likely the residua of previous pneumonia and is without substantial interval change . 3 . Mild pulmonary vascular congestion . 4 . Unchanged trace left pleural effusion .