Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size and cardiomediastinal contours are normal . Patchy opacity in the left lung base is unchanged , likely atelectasis . Lungs are otherwise clear without focal consolidation or pneumothorax . No displaced rib fracture . SVC vascular stent along the right aspect of the mediastinum appears stable . NG tube terminates in the stomach .
    OUTPUT:
    
Satisfactory position of NG tube . Left base atelectasis .