Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Partial atelectasis of the right upper lobe with associated bronchiectasis has slightly progressed in the interval . Lower lobe bronchial wall thickening , best visualized on the lateral radiograph has slightly progressed in the interval . Peripheral right lower lobe and left upper lobe scarring are unchanged . Cardiomediastinal contours are unchanged . There are no pleural effusions or acute skeletal findings .
    OUTPUT:
    
Interval slight worsening of partial right upper lobe atelectasis with associated bronchiectasis , and apparent progression in bilateral lower lobe bronchial wall thickening . These findings may be due to the patient 's history of MAC infection . Consider followup chest CT for more accurate comparison to previous outside CT of ___ .