Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 15 :41 is submitted .
    OUTPUT:
    
Left subclavian PICC line unchanged in position . Stable cardiac enlargement . Stable appearance to mediastinal contours . Lung volumes remain low but no focal airspace consolidation is seen to suggest pneumonia . No pulmonary edema , pleural effusions or pneumothorax .