Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains moderately enlarged . Coronary artery stent is re - demonstrated . The aortic knob is densely calcified . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . New focal opacity is seen within the right mid lung field , concerning for infection . Streaky atelectasis is also noted in the left lung base . A trace right pleural effusion is demonstrated with blunting of the costophrenic angle . No pneumothorax is identified . Marked degenerative changes of the left glenohumeral joint are again seen with a probable loose body inferior to the joint .
    OUTPUT:
    
New focal opacity within the right mid lung field concerning for pneumonia . Followup radiographs after treatment are recommended to ensure resolution of this finding .