Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again , a left internal jugular catheter terminates deep within the right atrium and could be pulled back approximately 6 cm to reposition in the low SVC . An endotracheal tube terminates 4 cm above the carina and is in appropriate position . The heart size is normal . The mediastinal contour is stable . A previously seen right upper lobe opacity is smaller . Vascular congestion is improved . There is no evidence of pulmonary edema . No evidence of pneumothorax .
    OUTPUT:
    
1 . Left internal jugular catheter terminates within the right atrium and could be pulled back approximately 6 cm for placement in the low SVC . 2 . Decreased size of the right upper lobe opacity , which may have been related to mucoid impaction . 3 . Persistent right basilar opacity consistent with pneumonia . 4 . No evidence of pulmonary edema .