Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . Previously described right - sided subclavian approach central venous line remains in unchanged position , terminating in mid portion of the SVC . No pneumothorax . Lungs are clear , no pulmonary congestion , pleural sinuses are free . Heart size is within normal limits . In comparison with the next previous examination , the patient 's inspirational effort has markedly increased .
    OUTPUT:
    
Normal chest findings on single AP view examination , thus no evidence of pneumonia .