Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tunneled right central venous catheter is in unchanged position since the study of ___ terminating in the mid SVC . Lung volumes remain low . Left midlung opacity has minimally progressed . Right infrahilar opacity is unchanged . The heart is not enlarged . There is no mediastinal widening . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Tunneled right central venous catheter remains in the mid SVC . 2 . Mild progression of left midlung opacities