Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates a right pneumothorax which is only slightly larger than on a comparably positioned exam ( from approximately 19 hr prior ) . The remainder of the exam is unchanged .
    OUTPUT:
    
The right pneumothorax is only slightly larger than on a comparably positioned exam ( approximately 19 hr prior ) . Otherwise unchanged .