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 . There is no evidence of pneumothorax in the apical area on either left or right side . In comparison with the next preceding chest examination of ___ , at that time described pulmonary abnormalities including a left lower lobe mass persists .
    OUTPUT:
    
No evidence of pneumothorax following transbronchial biopsy intervention .