Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes . The cardiomediastinal silhouette and pulmonary vasculature are stable since the prior examinations . Left basilar opacity is slightly improved since the most recent examination . A left - sided PICC terminates in the upper / mid SVC .
    OUTPUT:
    
Left PICC terminates in the upper / mid SVC .