Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 12 :58 is submitted .
    OUTPUT:
    
Right internal jugular Port - A - Cath unchanged in position . Overall cardiac and mediastinal contours are stable with the heart being mildly enlarged . Low lung volumes with crowding of the pulmonary vasculature but no focal airspace consolidation to suggest pneumonia . No pulmonary edema , pleural effusions or pneumothorax .