Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph again demonstrates low lung volumes consistent with the recent left upper lobectomy . The left chest tube is unchanged in position , directed superiorly , and there is no pneumothorax . There remainder of the exam is unchanged .
    OUTPUT:
    
Unchanged chest radiograph without pneumothorax . These findings were discussed via telephone by ___ , MD , with ___ , NP , at ___ on ___ . ___