Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right upper extremity PICC has been pulled back , now terminating in the upper SVC . A gastrostomy tube is partially imaged . The lung volumes are low , resulting in crowding of bronchovascular structures . There is no pulmonary edema . No pleural effusion , pneumothorax or focal airspace consolidation . Heart size and mediastinal contours are unremarkable .
    OUTPUT:
    
No pulmonary edema .