Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal a right - sided PICC line . There is an unchanged pacemaker , intact sternotomy wires , and multiple surgical clips over the upper abdomen . Tracheostomy tube is unchanged in position . Compared with the most recent radiograph , there is an increased opacity in the left lower lung , concerning for pneumonia . No pleural effusion or pneumothorax is identified .
    OUTPUT:
    
Compared with the most recent radiograph , the opacity at the left lower lung is increased , concerning for pneumonia , especially given the patient 's clinical history .